LWF in 3dsmax/vray make GI and AA flicker more

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  10 October 2012
LWF in 3dsmax/vray make GI and AA flicker more

Hi everyone,

Since few month i've decided to use a linear workflow because i can easily understand the benefits of working in correct gamma.

But i've got some severe flickering issues. I'll explain myself :

Because the corrected gamma make dark shadows lighters, the GI solution in that places is not accurate (dark shadows means no gi so vray don't put many subdivs in that places). I'm currently working on a dark scene and i experiencing many flickering.

I've got also some AA flickering and i suspect it has to same origin. In gamma 1.0 the overall image is very dark so vray doesn't need to put a strong AA because all object are darks (so the differences between these objets is not perceptible, that's why the render elements aren't AA well when two objets aren't lit properly).

So i come to this conclusion :
When i use LWF i think vray doesn't put more sample even if the image is brighter. So the GI and AA flickering which aren't visible at gamma 1.0 (because of a dark image) become clearly visible at gamma 2.2

My LWF method :

For 3dsmax :

Quote: In gamma/LUT i put gamma at 2.2,
Checked Affect Color Selectors
Checked Affect Material Editor
Input Gamma at 2.2
Output Gamma at 2.2 (since i'm outputing tgas, i need the gamma to be baked on the final image)

For vray :

Quote: In color mapping, Gamma 2.2
Checked Don't affect colors

What am I doing wrong ? Is anyone having a clue ?

  03 March 2013
Output Gamma at 2.2 (since i'm outputing tgas, i need the gamma to be baked on the final image)
In color mapping, Gamma 2.2

you added gamma twice?
  03 March 2013
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