BenQ says the first is for low levels of ambient light, while the second is for higher light levels. The other key feature is the second Game mode itself. The most obvious feature strictly for gaming is the fast lag time, which I measured at 16.4 milliseconds in both Game and Game (Bright) modes. Its rating of 2,200 ANSI lumens for its brightest predefined picture mode can boost brightness when you need it to stand up to ambient light, but as with almost any projector, the lower brightness modes deliver better color accuracy. It's built around a single DLP chip and a six-segment, RGBRGB color wheel-a choice that yields lower brightness but better color accuracy than wheels that include a white panel. The HT2150ST is first and foremost a home theater projector meant for use in a dark room or in low-light situations. In particular, its color accuracy, contrast, and black levels are excellent for the $799 price, which also makes it a good choice strictly for watching movies and TV.

(More on those shortly.) That said, the HT2150ST offers a lot even if you're not interested in gaming at all. And, indeed, serious gamers will appreciate not just the low lag, for its advantage in games that depend on reaction time, but some of its other features, too. BenQ lists the HT2150ST on its website as a home theater projector, but hides one of its secret powers: It's the only model of that kind that BenQ also highlights as having a low input lag for gaming.

Benq ht 2150st