Optoma GT720 DLP Projector Review
On the whole, it's a good projector, but if you're serious about gaming we'd recommend looking for something with a 720p or 1080p native resolution.
The Canon LV-8310 costs about the same as the Optoma GT720 and has the same WXGA (1280 x 800) resolution. However, the Optoma posits itself as a "portable gaming" projector. However, most gaming systems are 1080i or 1080p, and the Optoma showed terrible problems with rescaling those resolutions, and it's not really that light. On the other hand, the Canon doesn't support 1080p at all. On the whole, the Optoma GT720 is more flexible for gamers, but the Canon might be the better pick for offices.
Blacks & Whites
The Optoma GT720 managed a slightly brighter performance than the Canon LV-8310. However, it suffered from more problems with tunnel contrast, which means that black levels vary widely depending on how much black is on the screen.
The Optoma GT720 displayed more shadow detail, but lost some detail in the highlights. The Canon was smoother throughout the signal range.
The Canon LV-8310 was not quite as smooth in its motion performance as the Optoma GT720, but they both had about the same amount of artifacting.
The Optoma GT720 has a very short throw distance, and there's no zoom lens to give you a little flexibility. The Canon LV-8310 has a 1.2x zoom and a longer throw.
The Canon trumps the Optoma GT720 with a VGA output and ethernet input. The Optoma GT720 has an HDMI, but it's easy to adapt an HDMI input into the DVI port on the Canon.
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