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gamma correction, to bake or not to bake?
show user profile  Boing
I've noticed while moving to working in LWF that, in low light conditions, rendering with a gamma of 1.0 in vray gives noticeably reduced quality to rendering at a gamma of 2.2 .

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By boing at 2011-02-14

I assume this is because the render engine is working in a gamma corrected colour space and has more mid tone light to work with, hence better sampling etc, would this be accurate?

If I lower the Clr threshold in the AA settings i get a clean image again, not a problem in a small scene but in a bigger one it will increase render times so if i render with the gamma baked in and simply apply a 0.45 gamma to the saved 32 bit files, will this cause any issues later on with compositing ect?

read 1191 times
2/14/2011 1:48:15 PM (last edit: 2/14/2011 1:48:15 PM)
show user profile  Dub.
in the Vray Color mapping settings, set the Gamma value to 2.2 and check on "Don't affect colors"

This with cause the adaptivity to be measured in gamma 2.2 space so that you don't end up undersampling the darker areas of your image.


read 1168 times
2/14/2011 7:50:34 PM (last edit: 2/14/2011 7:50:34 PM)
show user profile  Bolteon
yupper.

-Marko Mandaric



read 1159 times
2/14/2011 8:42:36 PM (last edit: 2/14/2011 8:42:36 PM)
show user profile  Boing
You're a genius! cheers m'dear :)
read 1147 times
2/15/2011 1:30:16 PM (last edit: 2/15/2011 1:30:33 PM)
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