Review: Epson PowerLite Home Cinema 750HD Measurements

Like other Epson projectors I've reviewed recently, the 750HD performs differently in the Dynamic and Cinema modes. If you've already read my review, you'll know it also has some quirks to go along with its ridiculously intense light output.

It's worth noting, we like things that are ridiculous.

Cinema Mode

In the Cinema picture mode (called "Color Mode") and the Low Color Temp mode, the 750HD measures fairly warm across the grayscale range. There are only global RBG controls, but after calibration the 750HD measures much closer to the D6500 standard, with an average color temp of 6523 Kelvin. Dark images were still somewhat warm, while peak whites were somewhat bluish (neither severely).

There is no color management system, and all color points were slightly off the HDTV spec. Red is slightly orange, green is somewhat oversaturated and yellowish, blue is slightly oversaturated. The secondaries are off by similar amounts, with yellow being slightly oversaturated and a touch orangeish, cyan being somewhat blue, and magenta somewhat red. Though this didn't result in overtly "off" colors with regular video, it didn't have the realism found on displays with more accurate color.

With Power Consumption set to High, with a full 100% white image on a 102-inch 1.0-gain screen, the 750HD puts out 55.28 footlamberts. With a 0% black image, it produces 0.1349, for a contrast ratio of 410:1. With Power Consumption set to Low, these numbers are 44.5, 0.1065, and 418:1.

With the Auto Iris On (and the Power Consumption still set to Low), the light output drops slightly to 43.47, the black level to 0.0149, for a dynamic contrast ratio of 2,917:1.

Epson 750HD Cinema Mode by Geoff Morrison

Dynamic Mode

In the Dynamic picture mode (called "Color Mode") and the Low Color Temp mode, the 750HD measures close to 6500 Kelvin across the grayscale range. However, there's a lot more green in the image than there should be to match the D6500 standard. There are only global RBG controls, but after calibration the 750HD measures much closer to the D6500 standard, with an average color temp of 6538 Kelvin. Peak whites had an extra kick of green.

There is no color management system, and all color points were slightly off the HDTV spec, more than with Cinema mode. The primary color points are similar to Cinema mode, with red slightly orange, green somewhat oversaturated and slightly yellowish, blue a touch oversaturated. The secondaries are off by a larger amount. Yellow rather orangeish, cyan fairly blue, and magenta fairly red. Again, these didn't result in overtly "off" colors with regular video, but also didn't have the realism found on displays with more accurate color.

Uncalibrated (i.e. out of the box), with Power Consumption set to High, the 750HD is capable of 87.25 footlamberts with a full 100% white image on a 102-inch 1.0-gain screen. However, the image is rather greenish.

Calibrated, the light output drops to 76.04 ftL. Black level in this mode is 0.1328 for a contrast ratio of 573:1. Expect similar drops/numbers with the Low and Auto Iris modes in the Dynamic mode as measured in the Cinema mode.

 

Epson 750HD Dynamic Mode by Geoff Morrison

 

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