Epson PowerLite Home Cinema 705HD
Compact & bright projector that produces a lot of light, but lackluster color performance.
We found in our tests that the 705HD was capable of producing a decent amount of light: in the Dynamic mode, we measured the white screen output at 2304 lumens, just a touch below the rated 2400 lumens. In the Living Room and Theater modes, we found that the output was somewhat lower, at 2083 and 1636 lumens respectively.
On our 80-inch test screen, we found that this light output in the Dynamic mode translated into a screen brightness of 197 Cd/m2, which is equivalent to a bright standard HDTV.
The brightness of the whites that a projector produces are only part of the story: it also has to produce the deep blacks that give an image dramatic impact. Some projectors have issues here: the whites in an image bleed into the blacks, producing muddy grays. We found a little bit of this with the 705HD because when we measured the level of a black area of the screen as it was surrounded by more and more white, we found that it increased significantly. This means that high contrast screens might lack impact because the blacks would be brighter than they should be.
We also found that the 705HD produced a clean, uniform image without any major issues, in both bright and dark scenes. In the chart below, we show the lux value measured at 9 different locations on the screen, with the projector located on a table at the same height as the bottom of the screen. Although the lux value varies a lot across the screen, the pattern is uniform and there are no sudden changes or variations.
Below are photos of both black and white screens, and you can see that there are no significant problems with brighter or darker patches on the screen.
We measured the greyscale gamma (the slope of the curve that shows how quickly the projector goes from black to white) to be about 2.05, which is just below the ideal 2.1 to 2.2 range that we look for. But that's a very acceptable result.
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