Originally Posted by sotti
Did you use gamma factor?
AutoCal only works when gamma factor is at 1.
I know lumagen frequently recomends using gamma factor as it's a continuous function and their grayscale point are implemented in piece wise liner.
Changing the gamma factor changes where the patterns line up with the control points.
sorry if my question is more common than Calman or Radiance related.
I run a Color Cube on my VT50 in THX mode with Calman 5.1 last weekend and the post calibrated greyscale and gamma was much much better than than with 5.04. Many thanks to Spectracal!
As I own a EU model I also tried to calibrate a more brighter picture mode, but the pre calibtrated gamma of all the bright modes are a mess and THX cinema bright room was best.
due to the big gamma corrections that needs to be made to get a gamma of 2.2, it ends with strong posterisation in dark movie scenes. So if I can not use the gamma correction factor, how to calibrate with such pre calibration results?
Can I compensate the pattern issue Sotti has mentioned when I use a corrected gamma target?
E.g. (real) gamma target should be 2.2, gamma correction factor of the Radiance is 1.3. Will I get a real 2.2 gamma by setting the target in Calman to 2.86 (2.2x1.3)? Or does this not work?Edited by DrFaxe - 3/11/13 at 9:30am