Gpu interactive render too bright using V-Ray Physical Camera

[JuhaW]

Starting interactive render from Blender or via V-Ray Frame buffer, It seems ignoring Physical Camera settings. Cpu is ok.

[milva.perkovich]

Hey there,

It looks like the Physical Camera Settings are being ignored with VFB IPR on both CPU and GPU. Thanks to your report, we’ve logged this bug in our system. There’s also another known issue that only happens on GPU, which might be causing the differences you’re seeing between CPU and GPU renders. Right now, the GI property of the V-Ray Environment node from the V-Ray Node Editor -> World Tab affects the final render, even when it’s turned off. Since its default color is gray, the image looks more exposed. Changing its color to black should fix this.

Can you confirm if these are the exposure problems you’re having with your scene, or is there something else we should check? Sending a simple scene would also help us figure this out.

Cheers, Milva

image.png

[JuhaW]

In Blender Environment node GI default value is pure white (1,1,1), it just shows as grey because its disabled (color dimmed).
Now it seems that both Cpu and Gpu looks the same wrong when interactive render, when using Physical Camera.
Left image viewport render and right image VFB interactive render. Using Physical camera.
Almost forgot to say that changing GI value to black does not change overexposed roplem.

Physical camera too bright.zip

Ps. Does not accept .blend file, need to zip even .blend file is already compressed (Blender option)

blender_tP31V4QYM5.jpg VRayZmqServer_wEpui585ZD.jpg

[milva.perkovich]

The default GI value is indeed white. My bad . From what I can see in your scene, the issue is with the Physical Camera properties in IPR. The difference is even more noticeable because of the sunlight in your lighting setup.
The Physical Camera isn't full implemented in V-Ray for Blender yet. There will be some updates, but for now, I'd recommend using the Viewport IPR when adjusting the camera settings.