Framerbuffer limited to sRGB gamut?

[thebeals]

I had a post over here where I was trying to diagnose the scene (https://forums.chaosgroup.com/forum/...b-icc-workflow)

It appears to me that when I add a larger gamut icc profile such as adobe 98, the framebuffer doesn't preview it correctly. The saved PNG matches the viewport, but the saved PNG has an sRGB colrospace baked in which makes me suspect that since it matches the viewport, the viewport is limited in gamut. The saved EXR looks different than viewport and generally appears as expected when viewed in Photoshop with the correct working space. The EXR is confirmed to be saved with an RGB colorspace and not the sRGB space that the PNG is saved in.

Is this accurate? Is the viewport limited to an sRGB viewing, or am I misunderstanding/mis-using something?

Thank you for your help.

[thebeals]

Bump. Just wanted to follow up and see if anyone has an answer or if I am just missing something painfully obvious that was already answered in a previous thread.

[Zdravko.Keremidchiev]

VFB will display colors way out of the sRGB or Adobe98 gamut. It will be up to the device (monitor) to support those gamuts.

[thebeals]

Thank you for your response! That's what I would imagine to be true, but it's not what I am seeing. Can you help explain what is going on and/or what I am doing wrong? If I render with an ICC profile of adobe 98 profile (default one provided by windows) in the VFB, the colors are muted and washed out as what would I would guess would happen if the VFB was sRGB limited. When I save the .EXR and view it in Nuke or Photoshop in the correct profile and color space, the render appears much more vibrant and saturated than what I see in the VFB. In fact, the values between the VFB and what I see outside are different, making me think it's not just a viewing difference.

I am on an Eizo monitor viewing through Adobe 98 profile with a capability of achieving 99% Adobe 98. Photoshop an Nuke are also setup with an Adobe 98 profile and color space.

Thank you for your help and direction,

Jonathan

[thebeals]

I don't intend to continue to beat a dead horse, but I am still unable to get an adobe 98 icc profile to be viewed correctly in the vray VFB. Is there someone who can help me understand the workflow or explain why the VFB is showing a different result than Photoshop and why the values of the exr are different than what is in the VFB?

Thank you again,

[smbell]

Have you unchecked the little icon that looks like a gamma curve in the bottom of the VFB that says "display colors in sRGB space?" I didn't know this was there forever and it made my luts display all washed out. Once I turned that off, all was fine.

[thebeals]

Thanks for the help! Yea that button got me before as well. I've made sure to uncheck that box for this test and ensured the icc box is checked. Any other suggestions?

[Zdravko.Keremidchiev]

After all, there seems to be an issue with our ICC profile. We will look into it and let you know when we have an update.

[thebeals]

Thank you! I really appreciate you looking into it.