Why objects with black materials are white? (Octane for Blender)

Support Lighting and Rendering
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1

Sometimes I don’t understand logic of octane at all. I have HDRI lighting and black difuse material. Material black, but why objects whites? Is it bug? I was changing settings of color management but it wasn’t help. I need help. How to make that black material will be black in scene with this HDRI?
Link with scene https://drive.google.com/file/d/12-rNGcNTy8DBDpRUxGOlnU5yRsq-EeYq/view?usp=sharing

Group 24
Group 241920×1080 1.35 MB

2

Hi,

https://blender.stackexchange.com/questions/264437/blender-octane-render-texture-display-issue

3

Color looks to be ignored, but even if the color input was grey, Suzanne doesn’t look like (Lambertian) Diffuse at all, but Oren-Nayar. I don’t know anything about Octane though.

4

The problem was with gamma of environment (world) texture. I decreased from 2.2 to 1 and it works correctly now.

gamma
gamma1320×674 68.5 KB