Optoma HD8200 Projector Calibration and Settings - 2

Posted on March 29, 2009 by Art Feierman

Optoma HD8200 Post Calibration Grayscale

Post calibration, we ended up with excellent grayscale balance which was evident, when watching the HD8200.


20 IRE	6563K
30 IRE	6535K
40 IRE	6619K
50 IRE	6574K
60 IRE	6532K
70 IRE	6504K
80 IRE	6458K
90 IRE	6448K
100 IRE	6481K

That's about as tight, and as close to 6500K as any projector is likely to get.

Gamma: The closest gamma to the target 2.2 for movie viewing is Standard, which averaged 2.13, definitely pretty close.

RGB Settings

These are the adjustments we made to Red, Green and Blue for the grayscale balance of the User mode, to get the measurements listed above.

Calibration settings: (default in parenthesis)


Red Gain	1 (1)
Green Gain	0 (0)
Blue Gain	-1 (2)
Red Offset	(-1)
Green Offset	(-1)
Blue Offset	(-1)

For a quick calibrate of "brightest mode" Mike recommends using Reference. He reports that after brightness and contrast are adjusted, it has the brightnest measurements, and also has the best grayscale of the "brighter" modes. He says: "It looks good, as is, but knocking down Blue Gain a bit improves the picture with a minimal loss of lumens." I found his recommendation to work well, though I left blue alone, and it looked fine watching some March Madness basketball.