Gain Issue
Posted: Sun Feb 19, 2017 6:18 am
Indigo 3.8.31
3D Max
Hi Everyone,
I have been trying to figure out why I have been getting material colors that are too light in Indigo and may have found a gain issue / conflict. I'm hoping its just a setting issue you can help me solve.
I was running a test when I found the problem: I created 4 ball models and a mid grey background plane. The balls were assign colors derived from spectral data I collected. Ball 1 used the spectral data directly entered into its igm file. Balls 2-4 used linear adobe rgb values derive from Bruce Lindbloom's spectral converter. Balls 2-4 varied only by their designated CIE standard illuminate.
The color sampled was a dark chocolate brown. In Max's environment preview window the colors appear a dark brown when the auto 2.2 gamma correction is off. When exported to Indigo they appear dark brown in the environment preview and the color samples in the material editor, but appear cinnamon color in the render window and saved images.
Now here's were it gets more interesting: When I change the color gain of a ball in indigo, specifically lowering it and raising it back to 1, the color of balls 2-4 change to and render the expected dark chocolate color. There is no gain control in materials for the tab data of ball 1 so I can't tweak it and it remains a cinnamon brown.
Any ideas what might be causing the colors to be too light until the gain is wiggled?
Thanks
3D Max
Hi Everyone,
I have been trying to figure out why I have been getting material colors that are too light in Indigo and may have found a gain issue / conflict. I'm hoping its just a setting issue you can help me solve.
I was running a test when I found the problem: I created 4 ball models and a mid grey background plane. The balls were assign colors derived from spectral data I collected. Ball 1 used the spectral data directly entered into its igm file. Balls 2-4 used linear adobe rgb values derive from Bruce Lindbloom's spectral converter. Balls 2-4 varied only by their designated CIE standard illuminate.
The color sampled was a dark chocolate brown. In Max's environment preview window the colors appear a dark brown when the auto 2.2 gamma correction is off. When exported to Indigo they appear dark brown in the environment preview and the color samples in the material editor, but appear cinnamon color in the render window and saved images.
Now here's were it gets more interesting: When I change the color gain of a ball in indigo, specifically lowering it and raising it back to 1, the color of balls 2-4 change to and render the expected dark chocolate color. There is no gain control in materials for the tab data of ball 1 so I can't tweak it and it remains a cinnamon brown.
Any ideas what might be causing the colors to be too light until the gain is wiggled?
Thanks