Color Mapping discussion

[danb4026]

I have been using LW for quite some time now. But sometimes I opt out of full linear and uncheck my "Don't Affect Colors (Adaptation Only)" check box and go with Reinhard color mapping.

 

Unchecking the "dont effect colors" allows me to adjust color mapping, whereas having it checked basically nullifies any adjustments that might be made. This seems like throwing away options that are available to me.

 

I understand the advantage to LW, and sticking with Linear Color mapping, but does that outweigh the advantage of being able to make adjustments in types of color mapping and the adjustments within each type?

 

I am interested in everyone's opinion on this and how they have adopted their own workflow to either incorporate or not incorporate LW.

[Ismael]

"Unchecking the "dont effect colors" allows me to adjust color mapping, whereas having it checked basically nullifies any adjustments that might be made. This seems like

 

throwing away options that are available to me. "

Daniel Black

 

From Chaosgroup Forum:

 

"There are a number of tools out there that can perform tonemapping (including local tonemapping). Keep in mind that you should add the colourmapping settings anyways in vray

 

and check "dont affect colours" as otherwise sampling is performed in linear space wich may lead to bad sampling (=noise) in dark areas that are lifted in post."

 

Regards,

Thorsten

 

"Colormapping is not the same as tonemapping. Tonemapping usually refers to compressing dynamic range locally. VRay's color mapping is essentially a simple curve correction.

 

With the curve beeing dependent on the mode and settings. Linear gamma can be reproduced with a simple gamma correction. Others need more elaborate set ups, but should be

 

possible without a specific node."

 

Regards,

Thorsten

 

"Why should they? They still affect the way V-Ray performs adaptive sampling. This was the purpose for adding the "don't affect colors" option - people wanted the color

 

mapping to affect the sampling (i.e. the noise levels), but not to influence the final colors."

 

Best regards,

Vlado

 

"Oh my, i got really concused now...

So if i use lets say

 

Reinhard at 0.35 and gamma 2.2

Dot affect colors checked and subpixel/clamp off

 

What does it actually mean?"

 

PIXELBOX_SRO

 

"It means that you will render in linear gamma 1, display depending on your max preferences (gamma 1 or 2.2), and your sampling (aa, dmc) will be done on a gamma 2.2 flattened by reinhard curve image."

 

KiboOst

[danb4026]

Not sure what your trying to say.