Hi all,
i notice in couple of scenes (Bertrand Benoit Chicago Loft, CGSkies sample scene) that there has been a change in tha way that Gamma and LUT setting are set.
As far as i know, the LWF setup was long meant to be set:
input bitmap 2.2
output bitmap 1.0
Now , in those scenes i ve found its se to:
input bitmap 2.2
output bitmap 2.2
Ive rendered some test but i dont seen any difference in those two setup?
Is there a catch somewhere? 
Thanks
gamma correction made after color mapping (don’t know those scenes, but it looks like “don’t affect colors” is enabled in color mapping). hardly perceptible difference (just single pixels in my tests).
so as long as dont affect colors is checked, the 120 or 2.2 in the preferences in the output bitmap doesnt matter?
output gamma in prefs makes gamma correction during saving the image from vray frame buffer. You have the same option every time you save rendered frame. “don’t affect colors” makes all the vray computations according to gamma set in color mapping (aa, noise etc) but will leave colors unaltered - if you use gamma 2.2 - you will get dark image in vray frame buffer - use “srgb” button to see it properly (assuming 2.2 screen). srgb button only corrects gamma for viewing. In my understanding “dont affect colors” is just an option for doing gamma correction during postproduction/compositing.
right…i thought it was sort of interconnected. thanks!