Optoma GT720 Projector Review
|Color Temp over IRE Range (Post calibration):|
|Average gamma = 2.09|
Mike’s NOTES: Grayscale calibration is difficult because there is no picture mode where the RGB balance is consistent across the IRE range. This is made more difficult by the fact that the Gain settings mainly affect color saturation (like a Color control) and the Bias settings affect the entire IRE range.
For a better looking Bright mode without affecting lumen output, I would turn down the Red gain to about 10 as was done in the calibrated mode.
Calibration settings for User mode:
Starting settings are from Cinema, but with Brilliant Color on 10, Contrast on 47 and Brightness on 50.
GT720 Post Calibration settings:
Calibration settings for Standard: Color is on 40, all other settings same as pre-calibration or as stated below.
|Contrast (Gain)||R = (30) 10|
|G = (30)|
|B = (30)|
|Brightness (Bias)||R = (0)|
|G = (0) 2|
|B = (0) -3|
|Lumens at 100 IRE:||1810|
After Mike’s calibration of the GT720 he points out that getting the colors to look best in general costs barely 15% of the maximum brightness of this Optoma projector. As such most folks may well prefer our User settings to any of the GT720 defaults.
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