Today, Optoma announced two new, high brightness, 4K gaming projectors available for purchase from authorized dealers, the UHD35 and UHD38. These projectors expand on the UHD30 that came out last March. Both are capable of a 240Hz refresh rate for smooth motion in games and have low input lag—an attractive feature for gamers.

The lowest input lag for the UHD35 and UHD38 is only one quarter the already impressive lag of 16ms that the UHD30 was able to achieve at 240Hz. The new projectors are spec'd at 4.2ms with 1080p/240Hz signals. At other refresh rates, Optoma says the projectors are capable of 8.9ms at 1080p/120 and 16.7ms at both 1080p/60 and 4K/60.

Both projectors use Texas Instruments' UHD-resolution (3840x2160) DLP XPR display technology with a traditional lamp light source and an 8-segment (RGBWRGBW) color wheel. Optoma specifies a light output of 3,600 ANSI lumens for the UHD35 and 4,000 ANSI lumens for the UHD38. In Dynamic Black mode, the lamp has a life of up to 15,000 hours. The projectors are compatible with both HDR10 and HLG high dynamic range content. Blu-ray 3D is also supported.
The projectors look identical and share the same collection of inputs and outputs: two HDMI 2.0 inputs with HDCP 2.2, an optical audio out, VGA in, USB that can supply 5V of power at 1.5A (enough for a streaming stick), 3.5mm analog audio input and output, a 12V trigger, and RS-232.
The Optoma UHD35 and UHD38 are available now for $1,299 and $1,399, respectively.

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4. If you want something to complain about in projector's how about HDR? I would have loved to see dynamic tone mapping added to these Optoma's!
Freesync Premium Pro works with HDR.
The consumer ask is for a projector that can perform 4K 120Hz with Freesync Premium Pro. eARC should be on a different HDMI port.
Consumers are ready to buy a projector that can accomplish this.
We also have yet to see games that even fully utilize the processing power of the XSX/S and PS5. While there are some titles that are capable of 4K/120 in some way, it's usually only portions of the game (for instance, Gears 5 will only do it during multiplayer iirc). These titles that bridge the gap between old and new consoles are never able to fully capitalize on the new (Cyberpunk 2077 is the most famous current example). I'm excited to see games later this year that are coded primarily for the new consoles that will better utilize their processors (Horizon Forbidden West being at the top of my list).
Basically what I'm saying is, we'll get there. Probably within the next year. It's not that the companies are unaware of consumer's interest in those, it's that they're still getting it to work fully in a package that they can sell. I mean, Sony even released their first HDMI 2.1 gaming-centric TV without any of the gaming features enabled. Last I saw, they still haven't added ALLM or VRR. Seeing LG and Vizio getting it to work should at least give us hope (especially LG since maybe it means an LG projector isn't far behind).