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92 Highlights 47 Differences 5 Reactions 0 Likes
Optoma HD28HDR vs Optoma HD39HDR: 92 Highlights & 47 Differences — So, Which Projector Actually Works Better
Two similar models with key distinctions. Easy guide for your decision. We ran a full comparison of Optoma HD28HDR and Optoma HD39HDR — diving into product type, native resolution, throw ratio & lens material, standout features, and what makes each projector unique.
Image Scaling Engine Type: Standard Defines the scaling engine used to upscale lower-resolution content to the projector’s native resolution. with 35 points higher
Noise Reduction Type: Standard Indicates the technique used to reduce visual noise and artifacts for a cleaner image. with 35 points higher
Color Wheel Speed (for DLP): 6x Defines the rotational speed of the DLP color wheel, affecting color accuracy and rainbow artifact reduction. with 40 points higher
Optoma HD28HDR vs HD39HDR: A Tale of Two Bright Full HD Projectors
When it comes to home theater and gaming projectors, the Optoma HD28HDR and Optoma HD39HDR represent two solid choices from the same family, sharing core attributes like Full HD 1080p resolution, DLP projection technology, and a stylish white plastic body suitable for tabletop or ceiling mounting. Both models promise vibrant color wheels running at 6x speed and an absence of smoothing technologies such as MEMC or pixel shifting. Despite these similarities, they part ways in brightness output, imaging chip size, throw ratios, and connectivity, crafting distinct experiences for differing user requirements. From their lumens ratings to their audio capabilities and power consumption, these two projectors cater to varied demands in home entertainment setups.
Spotlight on Optoma HD28HDR: Balanced Brightness Meets Efficient Performance
The Optoma HD28HDR stands out as an excellent value option delivering a brightness of 3600 lumens that is bright enough for many home theater and gaming environments. Its relatively large lens aperture of 15.59 allows for a good balance of light gathering, sharpness enhancement between 2 to 4 to keep images crisp without oversharpening, and medium light uniformity that maintains consistency across the screen. Its longer throw ratio of 1.5 to 2.5+ means it requires more room for projection but suits more flexible seating arrangements. On the connectivity front, it covers essential ports with audio out but leaves out RS-232 and VGA. Power users will appreciate its slightly lower normal mode power consumption of 295W and a 27% eco mode power reduction. Its manual focus and dust resistance rating add convenience and durability for everyday use while operating comfortably within a wider storage humidity range of 5-95% RH.
Why the Optoma HD39HDR Might Be Your Next Upgrade
Stepping up to the Optoma HD39HDR, you encounter a projector designed to impress with a brighter 4000 lumens output and a larger 0.65" imaging chip that potentially delivers superior image quality and sharper visuals. Its higher light uniformity rating ensures more consistent brightness across the screen, complemented by a high-quality lens aperture of 2.43. The HD39HDR's shorter throw ratio of 1.12 to 1.47 allows for easier installation in space-constrained rooms, making it ideal for smaller home theaters or versatile gaming setups.
Among its standout features is the inclusion of skin tone correction and a customizable color temperature preset, enhancing color realism especially for cinematic content. Connectivity gains a boost with the addition of RS-232 and VGA ports, accommodating more diverse AV equipment and legacy hardware. The audio experience is also amplified with a robust 10-watt speaker compared to the HD28HDR's 3 watts. While it does consume more power at 325W, it compensates with an efficient 30.5% reduction in eco mode. The sophisticated icon-based menu system and auto source detection add user-friendly touches that optimize the overall control experience.
Quick Take
The Optoma HD28HDR is a smart pick for those seeking solid brightness, balanced sharpness, and an energy-efficient projector with essential connectivity. Meanwhile, the HD39HDR shines for users who want elevated performance through enhanced brightness, richer audio, and greater installation flexibility thanks to its shorter throw and additional ports.
Bottom Line
Ultimately, the choice between the HD28HDR and HD39HDR hinges on your priorities: budget-conscious buyers who prioritize power efficiency and straightforward features will appreciate the HD28HDR's value, while enthusiasts craving advanced image quality enhancements, superior audio output, and more flexible setup options will favor the HD39HDR despite its higher price tag and power usage. Both units deliver vibrant Full HD projection but cater to slightly different segments of the home entertainment market.
Verdict
Winner: Optoma HD39HDR - Offers brighter projection, better image processing with skin tone correction, enhanced audio power, and versatile connectivity ideal for serious home theater enthusiasts.
Runner-up: Optoma HD28HDR - Provides excellent value, balanced brightness, and efficient power use, perfectly suited for budget-minded users who need reliable home theater and gaming performance.
Side by side. The numbers. The features. No drama.
Not just a spec list — this is a side-by-side projectors comparison between Optoma HD28HDR and Optoma HD39HDR, packed with useful details, standout features, and what users actually say. See which projector wins your vote.
Optoma HD28HDR has an Imaging Chip Size of 0.47 inches, whereas Optoma HD39HDR has a larger size of 0.65 inches, potentially impacting image detail and brightness.
Specifies the size of the imaging chip. Larger chips generally improve performance.
In the battle of Imaging Chip Size, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 0.2 inch measurement.
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The Product Type for Optoma HD28HDR is Home Theater,Gaming, while for Optoma HD39HDR it is simply Home Theater, indicating the HD28HDR targets both home theater and gaming uses.
Defines the general classification of this projector.
In the battle of Product Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 42 score measurement.
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What is the projection technology type of this projector?
45 Optoma HD28HDR 0Votes DLP
85 Optoma HD39HDR 0Votes DLP
vs Projection Technology Type
Both Optoma HD28HDR and Optoma HD39HDR utilize DLP as the Projection Technology Type, offering similar image generation technology.
Identifies the core imaging technology used.
In the battle of Projection Technology Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Imaging Chip Type
What is the imaging chip type of this projector?
45 Optoma HD28HDR 0Votes DLP Chip
85 Optoma HD39HDR 0Votes DLP Chip
Optoma HD28HDR
This projector uses a DLP imaging chip, which generally provides sharp images and good color accuracy with fewer motion artifacts compared to other technologies.
Optoma HD39HDR
It uses a DLP imaging chip which typically offers high contrast ratios, good color reproduction, and sharp images.
Indicates the chip architecture that forms the image.
In the battle of Imaging Chip Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Release Year
What is the release year of this projector?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
60 Optoma HD39HDR 0Votes 2019
Optoma HD39HDR
This model was released in 2019, reflecting current projector technology and feature sets available at that time.
Shows the year the projector model was released.
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Intended Usage Type
What is the intended usage type of this projector?
38 Optoma HD28HDR 0Votes Home Theater, Gaming
78 Optoma HD39HDR 0Votes Home Theater, Gaming
Optoma HD39HDR
Designed primarily for Home Theater and Gaming purposes, this projector is ideal for immersive entertainment experiences with vivid visuals and responsive performance.
Describes the ideal application for this projector.
In the battle of Intended Usage Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Country of Manufacture
What is the country of manufacture for this projector?
45 Optoma HD28HDR 0Votes China
85 Optoma HD39HDR 0Votes China
Indicates where the projector was manufactured.
In the battle of Country of Manufacture, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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The Brightness Output is 3600 lumens for Optoma HD28HDR, compared to a higher 4000 lumens for Optoma HD39HDR, making the HD39HDR brighter for viewing in lit environments.
Indicates overall light output for visibility in ambient light.
In the battle of Brightness Output, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 400.0 lumen measurement.
Based on community votes for Brightness Output, Optoma HD28HDR ◉ earned 0 votes, less than Optoma HD39HDR ◉, which got 1 votes.
Optoma HD28HDR offers a Sharpness Enhancement Type of 2–4 (Balanced) while the Optoma HD39HDR does not specify this feature, indicating a possible advantage in image sharpness control for the HD28HDR.
What is the sharpness enhancement level?
In the battle of Sharpness Enhancement Type, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering higher 15 score measurement.
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Peak ANSI Lumens
What is the peak ANSI lumens of this projector?
3,600 lumen 0Votes
4,000 lumen 0Votes
Optoma HD28HDR
Brightness output is 3600 lumen, providing a bright image suitable for rooms with some ambient light.
Optoma HD39HDR
With a brightness output of 4000 lumens, this projector can deliver bright images suitable for a variety of ambient lighting conditions.
Industry-standard brightness measurement using ANSI method.
In the battle of Peak ANSI Lumens, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 400.0 lumen measurement.
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Color Gamut Coverage
What is the color gamut coverage?
100 % 0Votes
95 % 0Votes
Optoma HD28HDR
Color gamut coverage is 100%, indicating the projector can accurately reproduce the full range of colors within the specified color space.
Optoma HD39HDR
Color Gamut Coverage of 95% ensures rich and vibrant color reproduction close to the source content's original colors.
Indicates percent coverage of color spaces such as Rec.709 or DCI-P3.
In the battle of Color Gamut Coverage, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering higher 5.0 % measurement.
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Maximum Supported Resolution
What is the maximum supported resolution of this projector?
45 Optoma HD28HDR 0Votes 4K
85 Optoma HD39HDR 0Votes 4K
Optoma HD28HDR
The maximum supported resolution is 4K, allowing projection of ultra-high-definition content with great detail and clarity.
The highest resolution signal the projector can accept.
In the battle of Maximum Supported Resolution, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Contrast Ratio
What is the contrast ratio of this projector?
0 Optoma HD28HDR 0Votes 50,000:1
1 Optoma HD39HDR 0Votes 50,000:1
Optoma HD39HDR
Contrast ratio is 50,000:1, which offers deep blacks and vibrant highlights for good dynamic range in images.
Represents the difference between the darkest black and brightest white produced by the projector.
In the battle of Contrast Ratio, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 1 score measurement.
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Color Bit Depth
What is the color bit depth?
8 bit 0Votes
10 bit 0Votes
Optoma HD39HDR
The projector supports a color bit depth of 10 bit, providing smoother color gradients and more accurate color reproduction, enhancing visual quality.
Determines how finely color gradients are rendered.
In the battle of Color Bit Depth, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 2.0 bit measurement.
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HDR Format Support
What HDR formats does this projector support?
15 Optoma HD28HDR 0Votes HDR10
55 Optoma HD39HDR 0Votes HDR10
Optoma HD39HDR
Supports HDR10 format, enhancing dynamic range for brighter highlights and deeper shadows in compatible content.
Specifies which HDR formats the projector can display.
In the battle of HDR Format Support, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Refresh Rate
What is the refresh rate?
120 Hz 0Votes
120 Hz 0Votes
Optoma HD28HDR
The refresh rate is 120 Hz, which contributes to smooth motion rendering, beneficial for fast-action video and gaming.
Determines motion smoothness for gaming and video.
In the battle of Refresh Rate, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 120.00 Hz measurement.
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Dynamic Lumens
What is the dynamic lumens rating?
3,600 lumen 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Measures boosted brightness in enhanced dynamic modes.
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Dynamic Contrast Ratio
Deep dynamic contrast at :val.
0 Optoma HD28HDR 0Votes 50,000:1–200,000:1
10 Optoma HD39HDR 0Votes 50,000:1
What is the dynamic contrast ratio?
In the battle of Dynamic Contrast Ratio, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 10 score measurement.
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HDR Peak Brightness
What is the HDR peak brightness?
3,600 lumen 0Votes
4,000 lumen 0Votes
How bright the projector can go during HDR highlights.
In the battle of HDR Peak Brightness, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 400.0 lumen measurement.
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Motion Processing Type
Smooth motion processing with level :val.
5 Optoma HD28HDR 0Votes 2–5 (Standard)
0 Optoma HD39HDR 0Votes Not Specified
What is the motion processing level?
In the battle of Motion Processing Type, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering higher 5 score measurement.
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The maximum screen size capability is nearly identical, with Optoma HD28HDR supporting up to 302 inches and Optoma HD39HDR supporting 301.4 inches, making both suitable for very large displays.
Largest supported diagonal projection size.
In the battle of Screen Size Maximum, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering higher 0.6 inch measurement.
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Optoma HD28HDR has a Throw Ratio of 1.5–2.5+ (Long Throw), whereas Optoma HD39HDR offers a shorter throw ratio range of 1.12:1-1.47:1, giving the HD39HDR more flexibility in placement closer to the screen.
What is the throw ratio?
In the battle of Throw Ratio, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 21 score measurement.
Based on community votes for Throw Ratio, Optoma HD28HDR ◉ earned 1 votes, more than Optoma HD39HDR ◉, which got 0 votes.
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Horizontal angle adjustment to correct image distortion.
Don’t keep it to yourself — be the first to react and review the Keystone Correction Horizontal on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Digital Zoom Level
Useful zoom reaching :valx.
5 Optoma HD28HDR 0Votes 1.1x–1.5x (Moderate)
65 Optoma HD39HDR 0Votes 1.5x–2.0x (High)
Optoma HD28HDR
Digital zoom level is moderate, ranging between 1.1x–1.5x, allowing some flexibility in adjusting the image size without physically moving the projector.
Optoma HD39HDR
It features a Digital Zoom Level ranging from 1.5x to 2.0x, enabling users to adjust image size without physically moving the projector, useful for fine-tuning the image fit.
What is the digital zoom level?
In the battle of Digital Zoom Level, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 60 score measurement.
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Minimum Throw Distance
What is the minimum throw distance?
3.94 ft 0Votes
3.3 ft 0Votes
Optoma HD39HDR
The minimum throw distance is 3.3 ft (1.01 m), which is the closest distance the projector can be placed to achieve a clear, focused image.
Closest usable distance between projector and screen.
In the battle of Minimum Throw Distance, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering higher 0.6 ft measurement.
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Maximum Throw Distance
What is the maximum throw distance?
32.8 ft 0Votes
32.8 ft 0Votes
Optoma HD28HDR
The maximum throw distance is 32.8 ft (10 m), indicating the farthest recommended distance to the screen for a properly sized image.
Maximum distance at which the projector can achieve a proper image.
In the battle of Maximum Throw Distance, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 32.80 ft measurement.
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Projection Alignment Type
What is the projection alignment type?
0 Optoma HD28HDR 0Votes Front
35 Optoma HD39HDR 0Votes Front
Optoma HD39HDR
The projector is designed for front projection only, meaning it is placed in front of the screen or surface for image casting.
Describes how the projector aligns with the screen.
In the battle of Projection Alignment Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 35 score measurement.
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Keystone Correction Vertical
What is the vertical keystone correction?
40 degree 0Votes
40 degree 0Votes
Vertical angle adjustment to correct image distortion.
In the battle of Keystone Correction Vertical, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 40.00 degree measurement.
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Auto Keystone
Does this projector support auto keystone?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Automatically corrects keystone distortion.
In the battle of Auto Keystone, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Lens Shift Vertical
What is the vertical lens shift?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Vertical lens movement for distortion-free positioning.
Don’t keep it to yourself — be the first to react and review the Lens Shift Vertical on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Lens Shift Horizontal
What is the horizontal lens shift?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Horizontal lens movement to fine-tune placement.
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Optical Zoom Level
High-quality optical zoom at :valx.
0 Optoma HD28HDR 0Votes 1.1x (Entry)
55 Optoma HD39HDR 0Votes 1.2x–1.5x (Standard)
What is the optical zoom level?
In the battle of Optical Zoom Level, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 55 score measurement.
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Optoma HD28HDR has an Aperture Size of 15.59 f-stop, contrasting with a smaller 2.43 f-stop on Optoma HD39HDR, indicating different lens light gathering capabilities.
Specifies the optical aperture size affecting brightness and depth.
In the battle of Aperture Size, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering higher 13.2 f-stop measurement.
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Lens Replacement Compatibility is not available in either the Optoma HD28HDR or Optoma HD39HDR, so lens upgrades are unsupported.
Indicates whether the projector's lens can be replaced or upgraded.
In the battle of Lens Replacement Compatibility, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Neither Optoma HD28HDR nor Optoma HD39HDR feature Dustproof Lens Design, so lens protection against dust is similar for both.
Specifies whether the lens is designed to resist dust intrusion.
In the battle of Dustproof Lens Design, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Lens Coating Type
What is the lens coating type?
26 Optoma HD28HDR 0Votes Anti-Reflective
83 Optoma HD39HDR 0Votes Anti-Reflective
Optoma HD39HDR
Lens coating is anti-reflective, reducing light reflection to improve brightness and contrast while minimizing glare.
Defines special coatings that enhance optical performance.
In the battle of Lens Coating Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 57 score measurement.
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Auto Focus
Does this projector support auto focus?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Optoma HD28HDR
Auto focus is not available, meaning focusing must be adjusted manually for a clear image.
Indicates whether the projector can automatically adjust focus.
In the battle of Auto Focus, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Lens Protection Cover
Does this projector include a lens protection cover?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Optoma HD28HDR
The lens protection cover feature is not included, so the lens may be more exposed to dust and scratches without a protective cover.
Indicates whether the lens includes a physical protection cover.
In the battle of Lens Protection Cover, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Manual Focus Range
What is the manual focus range?
1 Optoma HD28HDR 0Votes Manual ring focus
45 Optoma HD39HDR 0Votes Manual focus ring
Indicates the distance range manual focus can adjust for.
In the battle of Manual Focus Range, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 44 score measurement.
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Lens Motor Noise Level
What is the lens motor noise level?
0 dB 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Measures noise generated during lens adjustments.
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The Light Source Power Output is 240 Watt for Optoma HD28HDR and slightly higher at 245 Watt for Optoma HD39HDR, which may contribute to brightness and performance differences.
Indicates the wattage of the light source, affecting brightness potential.
In the battle of Light Source Power Output, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 5.0 Watt measurement.
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What is the light uniformity rating of this projector?
5 Optoma HD28HDR 0Votes Medium
70 Optoma HD39HDR 0Votes High
vs Light Uniformity Rating
Optoma HD28HDR has a Medium Light Uniformity Rating, while Optoma HD39HDR rates as High, suggesting more consistent brightness across the image on the HD39HDR.
Indicates how evenly brightness is distributed across the screen.
In the battle of Light Uniformity Rating, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 65 score measurement.
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Optoma HD28HDR features Color Temperature options of Warm, Neutral, and Cool, whereas Optoma HD39HDR adds a Custom option, offering more color tuning flexibility.
Defines the visual warmth or coolness profile of the projected image.
In the battle of Color Temperature, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 33 score measurement.
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The Warm-Up Time is the same 30 seconds for both Optoma HD28HDR and Optoma HD39HDR, providing equally quick readiness.
Time required for the projector to reach full brightness.
In the battle of Warm-Up Time, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 30.00 second measurement.
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Light Source Lifetime Eco Mode
What is the light source lifetime in eco mode?
15,000 hour 0Votes
15,000 hour 0Votes
Optoma HD28HDR
Light source lifetime in eco mode is 15,000 hours, allowing for extended use while reducing power consumption and heat output.
Optoma HD39HDR
In eco mode, the light source lifetime is extended to 15,000 hours, which helps lower maintenance costs and extends projector usability.
Estimated lifespan of the light source in eco mode.
In the battle of Light Source Lifetime Eco Mode, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 15,000.00 hour measurement.
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Light Source Type
What is the light source type?
0 Optoma HD28HDR 0Votes Lamp
25 Optoma HD39HDR 0Votes Lamp
Optoma HD28HDR
The light source type is a lamp, which is traditional but requires periodic bulb replacement after its lifespan ends.
Defines the illumination technology powering the projector.
In the battle of Light Source Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 25 score measurement.
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Light Source Lifetime Normal Mode
What is the light source lifetime in normal mode?
4,000 hour 0Votes
4,000 hour 0Votes
Optoma HD39HDR
The lamp is expected to last for 4000 hours under normal usage conditions before requiring replacement.
Estimated lifespan in standard usage mode.
In the battle of Light Source Lifetime Normal Mode, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 4,000.00 hour measurement.
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Light Source Replaceability
Can the light source be replaced?
Yes 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Optoma HD39HDR
This projector supports lamp replacement, allowing users to extend its use by swapping out the light source when it dims.
Indicates whether users can replace the light source.
In the battle of Light Source Replaceability, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 18 score measurement.
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Cool-Down Time
What is the cool-down time?
0 second 0Votes
60 second 0Votes
Time required before the projector safely powers off.
In the battle of Cool-Down Time, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Light Flicker Control
Does this projector include light flicker control?
No 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Indicates whether flicker reduction technology is implemented.
In the battle of Light Flicker Control, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ .
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What color temperature presets does this projector offer?
21 Optoma HD28HDR 0Votes Warm, Neutral, Cool
61 Optoma HD39HDR 0Votes Warm, Neutral, Cool
vs Color Temperature Presets
Both models offer Color Temperature Presets including Warm, Neutral, and Cool, indicating similar preset options for color warmth adjustments.
Preset visual warmth settings for different content.
In the battle of Color Temperature Presets, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Both Optoma HD28HDR and Optoma HD39HDR use a 6x Color Wheel Speed for their DLP systems, so color processing speed matches.
Defines the rotational speed of the DLP color wheel, affecting color accuracy and rainbow artifact reduction.
In the battle of Color Wheel Speed (for DLP), Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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What type of image scaling engine does this projector use?
0 Optoma HD28HDR 0Votes Standard
35 Optoma HD39HDR 0Votes Standard
vs Image Scaling Engine Type
Both projectors use a Standard Image Scaling Engine Type, providing typical scaling performance for each.
Defines the scaling engine used to upscale lower-resolution content to the projector’s native resolution.
In the battle of Image Scaling Engine Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 35 score measurement.
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Neither projector supports MEMC Mode, so motion estimation and frame interpolation features are absent in both.
Motion interpolation for smooth fast-action content.
In the battle of MEMC Mode, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Auto Color Correction
Does this projector have auto color correction?
No 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Optoma HD39HDR
Auto color correction automatically adjusts color settings to maintain accurate and balanced image colors during use.
Automatically adjusts colors for the best image quality.
In the battle of Auto Color Correction, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ .
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White Balance Control
Does this projector include white balance control?
Yes 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Optoma HD28HDR
White Balance Control is available, which means the projector allows adjustment to achieve accurate color balance and reproduces natural colors on the screen.
Allows tuning of color balance for accurate whites.
In the battle of White Balance Control, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 18 score measurement.
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Noise Reduction Type
What type of noise reduction does this projector use?
0 Optoma HD28HDR 0Votes Standard
35 Optoma HD39HDR 0Votes Standard
Optoma HD28HDR
Noise reduction type is standard, helping to reduce visual noise without advanced processing that might impact image quality.
Indicates the technique used to reduce visual noise and artifacts for a cleaner image.
In the battle of Noise Reduction Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 35 score measurement.
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Image Processor Type
What is the image processor type?
0 Optoma HD28HDR 0Votes Standard
25 Optoma HD39HDR 0Votes Standard
Specifies the processing engine that handles color, scaling, and image optimization.
In the battle of Image Processor Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 25 score measurement.
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Image Processing Bit Depth
What is the image processing bit depth?
10 bit 0Votes
10 bit 0Votes
Indicates color precision and gradient smoothness.
In the battle of Image Processing Bit Depth, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 10.00 bit measurement.
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Color Calibration Profiles
What color calibration profiles are available?
28 Optoma HD28HDR 0Votes sRGB, Rec709, Cinema, Game
68 Optoma HD39HDR 0Votes sRGB, Rec709
Predefined settings for accurate color reproduction.
In the battle of Color Calibration Profiles, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Gamma Adjustment Levels
How many gamma adjustment levels are available?
0 Optoma HD28HDR 0Votes 1.8,2.0,2.2,2.4
63 Optoma HD39HDR 0Votes Multiple presets
Controls mid-tone brightness for accurate contrast.
In the battle of Gamma Adjustment Levels, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 63 score measurement.
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Black Level Enhancement
Does this projector include black level enhancement?
Yes 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Deepens dark scenes for improved shadow detail.
In the battle of Black Level Enhancement, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 18 score measurement.
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Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Lists available preinstalled streaming services.
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Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Indicates the supported wireless frequency bands.
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Smart Calibration
Does this projector support smart calibration?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Optoma HD28HDR
Smart calibration is not supported, so manual calibration or external tools will be needed for color or image adjustments.
Indicates whether calibration can be optimized automatically or via app.
In the battle of Smart Calibration, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Software Update Method
What is the software update method?
25 Optoma HD28HDR 0Votes USB
65 Optoma HD39HDR 0Votes USB
Optoma HD39HDR
Software updates can be performed via USB, allowing straightforward firmware upgrades through a USB flash drive.
Describes how firmware updates are applied.
In the battle of Software Update Method, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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On-Device Storage Capacity
What is the on-device storage capacity?
0 GB 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Optoma HD28HDR
There is no on-device storage capacity, so media must come from external devices rather than local memory.
Amount of internal memory available for apps and media.
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Operating System Type
What is the operating system type?
0 Optoma HD28HDR 0Votes No OS
5 Optoma HD39HDR 0Votes No OS
Specifies the software platform the projector runs on.
In the battle of Operating System Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 5 score measurement.
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App Store Support
Does this projector support an app store?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates support for downloading apps directly to the projector.
In the battle of App Store Support, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the App Store Support on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
AI Auto Image Optimization
Does this projector include AI auto image optimization?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Automatically enhances image settings using AI.
In the battle of AI Auto Image Optimization, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the AI Auto Image Optimization on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Wireless Casting
Does this projector support wireless casting?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates compatibility with casting protocols like Chromecast or AirPlay.
In the battle of Wireless Casting, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Wireless Casting on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Screen Mirroring Standard
What screen mirroring standard does this projector support?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Specifies which standard is used for mirroring devices.
Don’t keep it to yourself — be the first to react and review the Screen Mirroring Standard on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Bluetooth Version
What is the Bluetooth version?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Indicates the Bluetooth protocol version for audio and accessories.
Don’t keep it to yourself — be the first to react and review the Bluetooth Version on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Optoma HD28HDR offers 3 Watt Speaker Output Power compared to a stronger 10 Watt for Optoma HD39HDR, which may provide louder built-in sound on the latter.
Indicates total audio power from built-in speakers.
In the battle of Speaker Output Power, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 7.0 Watt measurement.
Based on community votes for Speaker Output Power, Optoma HD28HDR ◉ earned 0 votes, less than Optoma HD39HDR ◉, which got 1 votes.
Does this projector support Bluetooth audio output?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
vs Bluetooth Audio Output
Bluetooth Audio Output is not available on either Optoma HD28HDR or Optoma HD39HDR, limiting wireless audio output options.
Allows wireless output to speakers or headphones.
In the battle of Bluetooth Audio Output, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Bluetooth Audio Output on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
85 Optoma HD39HDR 0Votes Quick Settings, Advanced Settings, Icon-Based Menu
vs On-Screen Menu Features
On-Screen Menu Features on Optoma HD28HDR include Quick Settings and Advanced Settings, whereas Optoma HD39HDR adds Icon-Based Menu, offering a potentially more intuitive interface.
Describes navigational and functional features available inside the on-screen display (OSD) menu.
In the battle of On-Screen Menu Features, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Menu Navigation Style differs, with Optoma HD28HDR using a List style and Optoma HD39HDR using an Icon-Based style, affecting user interface experience.
Defines how users navigate the on-screen interface.
In the battle of Menu Navigation Style, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 60 score measurement.
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Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
vs Input Switching Speed
Input Switching Speed is 3 seconds on Optoma HD28HDR, while not available for Optoma HD39HDR, so performance comparison is unclear.
Time required to change from one input to another.
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Custom Preset Modes
Does this projector allow custom preset modes?
Yes 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
Optoma HD39HDR
Custom preset modes are available, enabling users to save specific image settings for different viewing scenarios.
Indicates whether image or sound presets can be saved by the user.
In the battle of Custom Preset Modes, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 18 score measurement.
Don’t keep it to yourself — be the first to react and review the Custom Preset Modes on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Control Panel Type
What is the control panel type?
0 Optoma HD28HDR 0Votes Buttons
25 Optoma HD39HDR 0Votes Buttons
Indicates the type of on-device control interface.
In the battle of Control Panel Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 25 score measurement.
Don’t keep it to yourself — be the first to react and review the Control Panel Type on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Backlit Remote
Does this projector include a backlit remote?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates whether the remote supports backlighting for dark rooms.
In the battle of Backlit Remote, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Backlit Remote on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Programmable Buttons
Does this projector include programmable buttons?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Determines whether the projector or remote includes assignable hotkeys.
In the battle of Programmable Buttons, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Programmable Buttons on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Indicator Light Controls
Does this projector support indicator light controls?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Allows dimming or disabling LED indicator lights.
In the battle of Indicator Light Controls, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Indicator Light Controls on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Parental Control Features
Does this projector include parental control features?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates whether parental restrictions or PIN locks are available.
In the battle of Parental Control Features, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Parental Control Features on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
The Input Voltage Range is 100–240V AC for Optoma HD28HDR and specified as 100-240V for Optoma HD39HDR, effectively the same wide input range for both.
Supported voltage range for safe operation.
In the battle of Input Voltage Range, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 36 score measurement.
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Power Consumption in Normal Mode is 295 Watt for Optoma HD28HDR and higher at 325 Watt for Optoma HD39HDR, indicating the HD39HDR may use more power under normal use.
Average power usage while running at full performance.
In the battle of Power Consumption Normal Mode, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering lower 30.0 Watt measurement.
Based on community votes for Power Consumption Normal Mode, Optoma HD28HDR ◉ earned 1 votes, more than Optoma HD39HDR ◉, which got 0 votes.
Both projectors lack a Power Efficiency Rating, offering no efficiency certification for either.
Describes the energy efficiency certification.
In the battle of Power Efficiency Rating, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
Don’t keep it to yourself — be the first to react and review the Power Efficiency Rating on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Power Consumption Eco Mode
What is the power consumption in eco mode?
215 Watt 0Votes
205 Watt 0Votes
Optoma HD28HDR
Power consumption in eco mode is lowered to 215 Watt, reducing energy use and heat generation during extended viewing.
Optoma HD39HDR
Power consumption is reduced to 205 Watts in eco mode, which helps save energy while maintaining satisfactory image brightness.
Reduced power usage when operating in eco mode.
In the battle of Power Consumption Eco Mode, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering higher 10.0 Watt measurement.
Don’t keep it to yourself — be the first to react and review the Power Consumption Eco Mode on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Operating Power Frequency
What is the operating power frequency?
50 Hz 0Votes
50 Hz 0Votes
Optoma HD28HDR
The operating power frequency is 50 Hz, compatible with power standards in many regions.
Optoma HD39HDR
Operates at a power frequency of 50 Hz, suitable for electrical systems in most countries with this standard.
Indicates supported AC frequency.
In the battle of Operating Power Frequency, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 50.00 Hz measurement.
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Power Cord Length
What is the power cord length?
6 ft 0Votes
6 ft 0Votes
Optoma HD39HDR
The standard power cord length of 6 ft (1.83 m) allows flexible connection to power outlets.
Length of included power cable.
In the battle of Power Cord Length, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 6.00 ft measurement.
Don’t keep it to yourself — be the first to react and review the Power Cord Length on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Power Supply Type
What is the power supply type?
55 Optoma HD28HDR 0Votes Internal
95 Optoma HD39HDR 0Votes Internal
Indicates whether the power supply is built-in or external.
In the battle of Power Supply Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
Don’t keep it to yourself — be the first to react and review the Power Supply Type on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Heat Output
What is the heat output?
1,000 BTU 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Measures emitted heat during operation.
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Thermal Control Technology
What thermal control technology does this projector use?
0 Optoma HD28HDR 0Votes Standard Cooling
65 Optoma HD39HDR 0Votes Advanced Cooling
Defines the system used to manage heat and maintain safe operating temperatures.
In the battle of Thermal Control Technology, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 65 score measurement.
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Power-On Time
What is the power-on time?
30 second 0Votes
10 second 0Votes
Time required for the projector to turn on and display an image.
In the battle of Power-On Time, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering higher 20.0 second measurement.
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The depth dimension is 9.61 inches for Optoma HD28HDR and slightly smaller at 9.5 inches for Optoma HD39HDR, differences which likely have minimal practical impact.
Physical depth measurement.
In the battle of Depth, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering higher 0.1 inch measurement.
Don’t keep it to yourself — be the first to react and review the Depth on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Optoma HD28HDR supports Tabletop mounting only, whereas Optoma HD39HDR supports both Tabletop and Ceiling mounting, providing more installation flexibility for the HD39HDR.
Describes available mounting configurations.
In the battle of Mounting Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 43 score measurement.
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Is the projector compatible with ceiling mounting?
Yes 0Votes Optoma HD28HDR
Yes 0Votes Optoma HD39HDR
vs Ceiling Mount Compatibility
Ceiling Mount Compatibility is present in both Optoma HD28HDR and Optoma HD39HDR, allowing ceiling installation.
Indicates whether the projector supports ceiling mounting.
In the battle of Ceiling Mount Compatibility, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 18 score measurement.
Don’t keep it to yourself — be the first to react and review the Ceiling Mount Compatibility on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Height
What is the height of the projector?
4.25 inch 0Votes
4.5 inch 0Votes
Optoma HD28HDR
Projector height is 4.25 inch (10.8 cm), which combined with width and depth defines the size footprint for installation or placement.
Optoma HD39HDR
The height of the projector is 4.5 inch (11.43 cm), which along with other dimensions helps in understanding how it fits into different spaces.
Vertical size of the projector body.
In the battle of Height, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering lower 0.3 inch measurement.
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Body Ventilation Design
What is the body ventilation design of this projector?
30 Optoma HD28HDR 0Votes Side Vent
70 Optoma HD39HDR 0Votes Side Vent
Optoma HD28HDR
Body ventilation design uses side vents to dissipate heat, helping maintain optimal operating temperature and reliability.
Optoma HD39HDR
Side venting helps maintain internal temperatures and prolong projector lifespan by improving heat dissipation.
Describes the airflow layout used to cool the internal components.
In the battle of Body Ventilation Design, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
Don’t keep it to yourself — be the first to react and review the Body Ventilation Design on Optoma HD28HDR ◉ vs Optoma HD39HDR ◉ and help others decide!
Weight
What is the weight of the projector?
5.51 lbs 0Votes
7.7 lbs 0Votes
Optoma HD28HDR
Projector weight is 5.51 lbs (2.5 kg), making it relatively lightweight and portable for its class.
Total weight of the projector.
In the battle of Weight, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering lower 2.2 lbs measurement.
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Package Width
What is the package width?
14 inch 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Optoma HD28HDR
The package width is 14 inch (35.56 cm), indicating the horizontal dimension of the packaging box.
Width of the boxed projector.
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Package Height
What is the package height?
6 inch 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Optoma HD28HDR
The package height is 6 inch (15.24 cm), indicating the vertical size dimension of the packaging. This helps to know the space needed for storage or transport.
Height of the boxed projector.
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Cooling Fan Size
What is the cooling fan size?
2.5 inch 0Votes
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Optoma HD28HDR
The cooling fan size is 2.5 inch (6.35 cm), affecting noise levels and thermal management efficiency.
Fan diameter contributing to cooling performance.
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Folded Width
What is the folded width?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Width when the projector or components are folded (if applicable).
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Folded Depth
What is the folded depth?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Folded depth measurement.
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Folded Height
What is the folded height?
Who knows? 0Votes Optoma HD28HDR (Help us out by suggesting one!)
Who knows? 0Votes Optoma HD39HDR (Help us out by suggesting one!)
Folded height measurement.
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Tripod Mount Compatibility
Is the projector tripod compatible?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates whether the projector can attach to tripods.
In the battle of Tripod Mount Compatibility, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Carry Handle
Does the projector include a carry handle?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Indicates whether the projector includes a handle for portability.
In the battle of Carry Handle, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Chassis Reinforcement Type
What type of chassis reinforcement is used?
0 Optoma HD28HDR 0Votes Standard Reinforcement
35 Optoma HD39HDR 0Votes Standard Reinforcement
Indicates extra structural strengthening applied to the projector chassis.
In the battle of Chassis Reinforcement Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 35 score measurement.
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Operating Humidity Range is 10–85% RH for Optoma HD28HDR and ≤85% for Optoma HD39HDR, showing similar humidity operation capabilities.
Acceptable humidity levels for proper operation.
In the battle of Operating Humidity Range, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 20 score measurement.
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Dust Resistance Rating is Basic for Optoma HD28HDR but None for Optoma HD39HDR, suggesting slightly better dust protection on the HD28HDR.
Indicates how well the projector resists dust intrusion.
In the battle of Dust Resistance Rating, Optoma HD28HDR ◉ is better than Optoma HD39HDR ◉ , delivering higher 5 score measurement.
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The Eco Mode Power Reduction Percentage is 27% for Optoma HD28HDR and 30.5% for Optoma HD39HDR, with the HD39HDR providing slightly better power savings in eco mode.
Amount of power saved when using eco mode.
In the battle of Eco Mode Power Reduction Percentage, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 3.5 % measurement.
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The minimum Operating Temperature is 41°F for both Optoma HD28HDR and Optoma HD39HDR, indicating similar environmental operating limits.
Minimum safe temperature at which the projector can operate.
In the battle of Operating Temperature Minimum, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 41.00 °F measurement.
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Storage Humidity Range is 5–95% RH for Optoma HD28HDR and 10–85% RH for Optoma HD39HDR, so the HD28HDR may tolerate a wider humidity range for storage.
Humidity levels tolerated during storage.
In the battle of Storage Humidity Range, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 35 score measurement.
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Storage Temperature Minimum
What is the minimum storage temperature?
-4 °F 0Votes
-4 °F 0Votes
Optoma HD28HDR
The minimum storage temperature is -4 °F (-20 °C), denoting the lowest safe temperature for storing the device without damage.
Optoma HD39HDR
The minimum storage temperature is -4 °F (-20 °C), defining the lowest temperature the device can safely be stored in.
Minimum safe temperature for storing the projector.
In the battle of Storage Temperature Minimum, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal -4.00 °F measurement.
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Storage Temperature Maximum
What is the maximum storage temperature?
140 °F 0Votes
140 °F 0Votes
Optoma HD28HDR
The maximum storage temperature is 140 °F (60 °C). Store the projector under these conditions to avoid damage.
Maximum temperature the projector can handle when stored.
In the battle of Storage Temperature Maximum, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 140.00 °F measurement.
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Light Spill Control
Does this projector have light spill control?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Optoma HD28HDR
Light spill control is not provided, so some light may leak from the projector body, which can affect perceived contrast in dark environments.
Indicates measures used to contain unwanted light scatter.
In the battle of Light Spill Control, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Operating Temperature Maximum
What is the maximum operating temperature?
104 °F 0Votes
104 °F 0Votes
Maximum safe temperature for normal operation.
In the battle of Operating Temperature Maximum, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ , delivering equal 104.00 °F measurement.
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Outdoor Use
Does this projector support outdoor use?
No 0Votes Optoma HD28HDR
No 0Votes Optoma HD39HDR
Specifies whether the projector is designed for outdoor environments.
In the battle of Outdoor Use, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Both projectors use AAA batteries for their Remote Control Battery Type, a common and easily replaceable type.
Specifies the battery type required for the remote.
In the battle of Remote Control Battery Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 25 score measurement.
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Service Availability Region is Global for both Optoma HD28HDR and Optoma HD39HDR, ensuring worldwide support.
Specifies the regions where service and repairs are supported.
In the battle of Service Availability Region, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Power Cable Type is 3-Prong for both models, standard for safety and grounding.
Describes the style of the included power cable.
In the battle of Power Cable Type, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Included Accessories
What accessories are included with the projector?
15 Optoma HD28HDR 0Votes Remote, Power Cable
55 Optoma HD39HDR 0Votes Remote, Power Cable
Optoma HD28HDR
Included accessories are a remote control and power cable, providing essential tools to operate and power the projector out of the box.
Optoma HD39HDR
The included accessories are a Remote and Power Cable, providing essential tools for operation and convenience right out of the box.
Lists the accessories that come in the box.
In the battle of Included Accessories, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 40 score measurement.
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Replacement Lamp Model
What replacement lamp model is supported?
15 Optoma HD28HDR 0Votes Long-Life Lamp
15 Optoma HD39HDR 0Votes BL-FU245A
Optoma HD28HDR
The projector uses a long-life lamp model, which typically offers extended usage hours before replacement.
Optoma HD39HDR
The replacement lamp model is BL-FU245A, which is specific to this projector to maintain brightness and image quality over time.
Defines the type or class of replacement lamp or light module compatible with the projector.
In the battle of Replacement Lamp Model, Optoma HD28HDR ◉ is same as Optoma HD39HDR ◉ .
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Warranty Duration
What is the warranty duration?
0 Optoma HD28HDR 0Votes 1 year
25 Optoma HD39HDR 0Votes 1 year
The length of the included manufacturer warranty.
In the battle of Warranty Duration, Optoma HD28HDR ◉ is worse than Optoma HD39HDR ◉ , delivering lower 25 score measurement.
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Surveys
Because hot takes deserve votes.
Performance
How would you rate the performance of this projector in terms of brightness and picture quality?
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