Optoma's HD39HDR offers low input lag for fast reaction time in games, plus sufficient brightness for a large movie or game image to stand up easily to ambient light in a family room. Designed ...

The most notable qualities it shares with Optoma's HD39HDR are support for high dynamic range (HDR) video and the ability to accept 4K (3840-by-2160-pixel) input to downconvert to its native 1080p.

Projectors are great for big images, but they aren't always fast enough for gamers. Optoma's new 4K HDR models fix that with low input lag and response times.

Designed both for gaming and for watching movies and TV, the $799 Optoma HD39HDR is one of a growing number of 1080p home projectors that can accept a 4K UHD (3,840-by-2,160-pixel) HDR signal and ...