Metalness Gamma - Getting too dark when metalness is set 1 Tweet

[tcheng00]

Hi, my metal seems to be getting too dark when the metalness value is set to 1. I've compared it to Arnold and Redshift and it doesn't get dark like Octane. I had to compensate by setting the gamma for the albedo to 1.0 instead of 2.2. But if I turn metalness to 0, the Albedo 1.0 gamma is way too bright and I had to set it back to 2.2 for it to look right. Please check.

This is the dielectric helmet with albedo gamma set to 2.2

This is the conductor (metalness) helmet with albedo gamma set to 2.2, but the metal is too dark.

This is the conductor (metalness) helmet with albedo gamma set to 1.0. This compensated for the overly dark metal.

I believe I shouldn't have to compensate the albedo to make the metal look normal since that problem doesn't exist with other render engines such as Arnold and Redshift. For whatever reason, the gamma is shifting incorrectly. The same problem can be seen with the HDRI environment maps.

Can somebody from Otoy respond so I know my efforts are useful, otherwise, I'm going stop bug reporting.

[linograndiotoy]

Hi Thomas!
It would be great if you could share the model (or a part of it) and textures with me.
I'd like to test this possible issue in Standalone and other vesions of the plugin.

[tcheng00]

Alright, it looks like the Octane gamma problem is due to the viewport displaying things in linear color space by default. I got it correct now, very happy with Octane right now. Thanks Lino for the help.