
Review Summary
2020-02-11T19:00:00
So this is my second time buying this projector. First one had to be returned due to a loud fan and flickering image issues. This second projector I got won't connect with alexa, won't stay connected to wifi, won't update, and HDR mode gives me very washed out or very dark image. I am beyond frustrated that I spend half my time fixing this projector rather than enjoy it
Rony
2019-11-29T19:00:00
I’ve had this projector for a year now, and use a 100” screen to throw. My room is painted a flat black and gray, so there’s very little glare with all the lights off and at night. Sorry to say that the blacks aren’t very black; they’re more of a dark gray. I am very understanding of this due the the stellar price, and am still good with it as a starter projector. I’ve had lots of issues using the projector through a soundbar, so make sure you are hooked up directly to your projector to avoid lag and buffering issues. Neither Optoma or Nakamichi could help me troubleshoot these issues, so now I use optical for sound instead. 3D works well and 4K has exceptional clarity, but make sure you buy the right cables to support.
Nelly
2019-07-09T20:00:00
I want to update my previous review as with any electronics I want to report that I may have purchased a lemon. I will say that Optoma customer support has gone out of their way to help me resolve all my issues. Specifically Marty with optoma has been amazing. I love the picture quality in 4K and 1080p you will be amazed when you get it dialed in right. I originally gave my review a 1 star and said I would not recommend but after working with Marty he has completely changed my mind.
DJ1498
2019-05-24T20:00:00
Read the reviews on Optoma UHD projectors I have A UHD51A that stopped working after 1 months of use. HDMI 2 doesn’t work at all and HDMI 1 flickers. It’s a known problem if you search the web. Optoma will ask you to do an RMA and then wait 7-10 days for them to repair. After spending $1700 on a projector that is ridiculous. Buyer beware.
DJ1498
2019-01-10T19:00:00
I've owned the UHD51A for a few months now. I use it primarily for PC gaming in 3D, 4K tv watching (and occasionally gaming at 120Hz in 2D on a 140" screen. I spend most of my time in 3D modes with my projectors. Image quality is great and 2D games really shine in 4K. Even 1080p content looks good from close distance due to the higher overall number of pixels fitting on the screen. Much better than my previous 1080p projector from 10-12 feet away. Blu-ray 3D movies also look fantastic playing on a PS3 (1080p). Overall, I've had no serious issues with the 3D functionality except for one KEY thing: Frame sequential 3D support is missing or disabled. This means I cannot play 3D games in higher resolutions from a PC at 1080p. I have to settle for software modes (like nVidia's 3D tv play) that only work in 720p for a decent refresh rate (60fps and above). Older Optoma projectors as well as current lower tier models have frame sequential mode as an option, so not sure why it's not included on this UHD/3D marketed model. Pairing the increased UHD pixel count with a maximum 720p resolution in 3D seems like a limiting combo. For some people, being able to watch 2D content in 4K and 3D movies on the same machine is good enough. For those people, I think this projector is a winner as it does both of those basic things very well. As a 3D gamer, though, the UHD51A's lack of frame sequential 3D support is both limiting and head scratching...especially since they are still including in other newly released models. Hopefully this is an oversight that can be corrected with a firmware update. If that's the case, even with some other minor issues (like wifi support, Alexa problems, etc) the enabling of frame sequential 3D mode would be enough to check all of the major boxes for me and many other 3D gamers. That would make this a 5-STAR product in my eyes and the ultimate 3D gaming projector that I was going for when I purchased it.
Ray D.
16:9 (native), 4:3 and LBX compatible
2x 5 Watt Speakers
2400 ANSI Lumens
RGBRGB 6 segment color wheel
Up to 500,000:1 with Dynamic Black
Single 0.47" 4K UHD DMD DLP by Texas Instruments
34.1" - 302.4" (34.1" to 140" optimal image size)
4,000/10,000/15,000 (Bright/ECO/Dynamic)
Vertical: 15% offset (with tolerance +/-5%)
4K (4096 x 2160) at 30Hz
4K UHD (3840 x 2160) at 60Hz with XPR Technology
28/25dB (Bright/ECO)
100%
REC.709 color gamut provides rich accurate color based on the HDTV broadcast specification.
DCI-P3 wide color gamut is the equivalent to color in the CIE 1931 color space, resulting in vivid colors
HDR10 compatible (REC.2020)
Picture Modes: Normal, Bright, Detail, Film
HDR SIM (simulate HDR effect with non-HDR content)
Upscales WXGA, 720p, 1080p, WUXGA, 1440p resolutions and frame rates up to 4K UHD (3840 x 2160), 60 Hz
UltraDetail Technology enhances image quality by improving image depth and clarity
3840 x 2160 at 30Hz YUV 4:4:4 (8bit, 10bit, 12bit), YUV 4:2:2 (8bit, 10bit, 12bit), YUV 4:2:0 (8bit, 10bit, 12bit)
3840 x 2160 at 60Hz YUV 4:4:4 (8bit), YUV 4:2:2 (8bit), YUV 4:2:0 (8bit, 10bit, 12bit)
2.9' - 34.89'
F=2.5 - 3.26, F=20.91 - 32.62mm manual focus
Front, rear, ceiling mount, table top
Full Function Home Remote Control
1.21 - 1.59 (distance/width) -/+ 5% variance
80%
Optical Zoom: 1.3x Manual, Digital Zoom: 0.8 - 2.0
4K UHD 2160p, WUXGA, HDTV 1080p, UXGA, SXGA, WXGA+, WXGA (1366x768), WXGA, HDTV (720p), XGA, SVGA, VGA, PC and Mac compatible
4K UHD 2160p (24/50/60Hz), 1080p (24/50/60Hz), 1080i (50/60Hz), 720p (50/60Hz), 480i/p, 576i/p
Ultra HD Blu-Ray player, 4K UHD streaming media device (Roku 4K Ultra), Xbox One S / One X (Ultra HD Blu-ray, 4K media streaming & HDR gaming) and PS4 Pro (4K UHD media streaming and 4K UHD HDR gaming only)
Side-by-side: 1080i50 / 60, 720p50 / 60
Blu-ray 3D / Frame-pack: 1080p24, 720p50 / 60
Over-under: 1080p24, 720p50 / 60
Vertical: 24Hz to 120Hz / horizontal: 31 to 135 KHz
2x HDMI 2.0 (with HDCP 2.2, MHL 2.1), VGA-in, audio-in (3.5mm), audio-out, S/PDIF out (optical), USB 2.0 (service port), USB (for Alexa Wi-Fi adapter), USB (media playback), USB, RJ-45, RS-232C, 12V trigger
Audio pass-through from HDMI to 3.5mm audio out and optical S/PDIF out (2-channel PCM)
Videos: 480p, 720p, 1080p, 1440p, 4K UHD, 4K UHD HDR
File formats: MKV, MP4, M4V, AVI, H.264, HEVC, MOV, TS
Audio: MP3, AAC, WAV, FLAC 16/24-bit
Images: JPEG, BMP, GIF
Web browser provides access to popular websites for video streaming
Supports viewing of office documents (Word, Excel & PowerPoint), PDFs and images via USB storage devices
Autoplay PDF / PowerPoint: 3, 5, 10, 15 & 20 second intervals
Casting: videos, images and music from Android, iOS, Windows and Mac OS X (requires EZCast app)
Mirror Android, Windows & Mac OS X (requires EZCast app)
iOS (App Store) & Android (Play Store & Amazon App store)
Commands: power on/off, volume control (1-10), change input source, media player controls (play, stop, pause, next, previous, FF, REW, start over)
United States - English, Canada - Canadian English
Commands: power on/off, volume control (1-10), change input source, media player controls (play, stop, pause, next, previous, FF, REW, start over),change display mode, HDR picture mode, PureMotion setting
41 to 104 deg. F (5 to 40 deg. C), 85% max humidity
317W typical (Bright mode), 348W max (Bright mode), 259W typical (Eco+ mode), 285W max (Eco+ mode)
AC input 100-240V, 50-60Hz, auto-switching
Operating temp at sea level to 10000 feet = 23C (max); must manually switch to high altitude mode at 5000 feet & above (using OSD)
Kensington lock port, password (OSD)
15.4 x 11.1 x 5.1" (39.12 x 28.19 x 12.95cm)
11.75 lbs (5.33kg)
Update to previous review
By DJ1498
I want to update my previous review as with any electronics I want to report that I may have purchased a lemon. I will say that Optoma customer support has gone out of their way to help me resolve all my issues. Specifically Marty with optoma has been amazing. I love the picture quality in 4K and 1080p you will be amazed when you get it dialed in right. I originally gave my review a 1 star and said I would not recommend but after working with Marty he has completely changed my mind.
A smart projector for a smart home
Take control of your home theater with voice commands. With the Alexa Smart Home Skill or Google Actions, control your 4K UHD 2,400 lumen Optoma UHD51A projector with intuitive voice control and easy integration using Amazon Echo and Google Home devices.
Use voice commands to power the projector on and off, change volume, change input source and control the USB media player. Additionally, the UHD51A utilizes the latest Texas Instruments 4K UHD DLP chipset capable of displaying 8.3-million simultaneous distinct pixels at screen sizes 140 inches and higher.
A pair of HDMI 2.0 inputs with HDCP 2.2 support, HDR compatibility and wide color gamut ensure 4K device compatibility, rich lifelike color and contrast for immersive experiences. A 1.3x optical zoom and 15% vertical lens shift provide installation flexibility.
Alexa Smart Home
Alexa Smart Home Skill enables projector control via Amazon Alexa. Supported control functions include power on/off, volume level, input selection and the USB media player playback.
Google Assistant Compatible
Google Voice Action compatibility provides projector control via Google Assistant. Supported control functions include power on/off, volume level, input selection, USB media player playback and more.
DLP Technology
DLP (Digital Light Processing) is a proprietary technology that offers digital projection with higher contrast, faster response time, good pixel structure and virtually no color degradation.
Full 3D
Display true 3D content from almost any 3D source, including 3D Blu-ray Disc players, 3D broadcasting and the latest-generation game consoles. Support for 144Hz rapid-refresh rate provides ultra-smooth flicker-free images. Optoma 3D glasses required.
Dynamic Black Technology
This feature gives more depth to your image by smoothly adjusting the lamp output to create a stunning high contrast ratio. Bright scenes appear crisp and clear, while dark scenes remain detailed with deep blacks and exceptional light and shade detail.
PureMotion
Using sophisticated frame-interpolation technology, advanced motion control processing eliminates motion blurring or image judder, even in high-speed action sequences. PureMotion works in both 2D and 3D and is optimized for 1080p24.
UltraDetail
This technology ensures all the information contained in an image is accurately reproduced on the screen to give a stunning crystal clear, pin-sharp picture. Complex algorithms detect each frame and improve image sharpness before the frame is projected.
PureColor
This mode allows the projector to reproduce more detailed shades of color for vibrant, natural-looking images. Colors are more saturated and more accurate.
Vertical Lens Shift
Vertical lens shift simplifies installations by shifting the image up and down without image distortion to provide a wider range of projector placement possibilities, making it easier to position the projector in a room.
HDR
High dynamic range (HDR) technology delivers brighter whites and deeper black levels. Optoma HDR accepts HDR10 signals with four selectable picture modes: Normal, Bright, Detail, Film
DCI-P3
Color the way it is meant to be seen - rich, colorful and cinematic pictures and games via DCI-P3 wide color gamut coverage.
BT.2020
HDR signals are mapped using REC.2020 tone mapping and provides coverage for REC.709, DCI-P3 and a wide coverage color gamut.
PC-Free USB 4K UHD HDR Media Player
Integrated 4K UHD HDR USB Media Player provides playback of 1080p and 4K UHD HDR video, audio files and images along with support for Office Documents and PDF Files.