projectors

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.

December 09, 2010
Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

Throw

The Optoma GT720 has a very short throw and no zoom lens, making it a not-terribly-flexible projector. You need to position it just so in order to fit it correctly to your screen. An 80-inch screen requires a distance of just 67 inches (5 ft, 7 in).

Ignore the second row of values in the chart below. Because there's no zoom lens on the Optoma GT720, the wide angle and telephoto are the same.

Screen Brightness

The screen brightness produced by the Optoma GT720 falls off rather quickly as you move the projector further back from the screen. It's the same for any projector, but these numbers in the chart below should give you some idea of whether the Optoma GT720 is right for your particular room layout.

Still not sure whether the Optoma GT720 is right for you? This chart below should simplify it a little.

In an ideal world, projector manufacturers might hope that you do all your movie watching and video game playing in a dark room, where their projectors do the best job. Of course, this is not usually the case. A projector's abilities are greatly diminished by ambient light, and the Optoma GT720 has a hard time with even moderate ambient lighting in some cases.

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Screen Materials

You won't always have a dedicated projector screen or perfectly white wall to project onto. For just such a reason, we check projectors' images against a grey painted wall, a beige painted wall, wood paneling, and a dry-erase board. We saw the expected color shifts, and unfortunately there's no easy way to correct the colors. The menu offers an option for correcting colors to a black board surface, but no other type of surface.

Optical Issues

There were virtually no optical issues with the Optoma GT720's performance. In this test, we look for ghosting, color aberrations, or barrel distortion from the lens. We saw none of these problems.

Video Processing

The Optoma GT720 has no video processing options. There are several "modes," described on the next page, but these are one-size-fits-all settings that leave no room for other tweaks.

Formats

The Optoma GT720 has a native WXGA resolution (1280 x 800), but can display a resolution as high as UXGA (1600 x 1200). That means that 1080i and 1080p (1920 x 1080) HD video formats are being downscaled for display. This may be significant for gamers, because our testing showed that the Optoma GT720 is really terrible at rescaling 1080i and 1080p, which are the most popular resolutions for modern game systems.

Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

Sections

  1. Tour & Design
  2. Blacks & Whites
  3. Color Accuracy
  4. Motion
  5. 3D
  6. Viewing Effects
  7. Calibration
  8. Remote Control
  9. Connectivity & Media
  10. Power, Noise & Heat
  11. Canon LV-8310 Comparison
  12. Optoma HD66 Comparison
  13. Epson PowerLite Home Cinema 705HD Comparison
  14. Conclusion
  15. Specs and Ratings
Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.
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Our editors review and recommend products to help you buy the stuff you need. If you make a purchase by clicking one of our links, we may earn a small share of the revenue. Our picks and opinions are independent from any business incentives.

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