Wrong Gamma

[3LP]

We have got this issue in a current project,

Does anyone have any idea on what it could be,
I think it's something related with a object.

Even if we merge everything back to a fresh scene, few renders are working and then it "corrupt" the gamma again...

We do multi-light render setup : Sun, Sky, Ref, Int, etc...
The good thing is that it's only happening on our sun pass, so I guess it's something related with the VraySun...
Do you guys have a sun in the scene or is it happening with HDRI only as well?

Stan

[mik64]

I didn't have a sun, but an HDRI in the Reflection/Refraction Environment Override...

[glorybound]

I have escaped that issue , as of late, which is awesome! I have never figured out what causes it.

[DPS]

So I've had this problem too - Chaos confirmed this on their end too with a super basic scene that I sent them so I'm surprised that it hasn't been spoke about more here.

Whilst this doesn't affect final render it's a frustrating problem to work with. I find it enough to deal with ensuring that my render nodes are working properly, with maps and with various plugins, and I think having to wait to inspect the final render on a large scene is not very efficient.

[theedge]

I had this issue for the first time in years last week. My nodes kept rendering darker buckets whatever I did. At the end there was nothing left in the scene except a light dome (no hdri) and some objects and still got the issue, even with GI disabled ! That lasted for 2 days and because of the very tight deadline I could not investigate further. But now the problem is gone. Don't know why don't know how, frustrating.
Now I notice that during Irradiance Map calculation, some buckets are much darker but that doesn't affect the final rendering - for the moment at least - fingers crossed.

[danio]

I just had a very similar problem. In the end I solved it by changing my burn value back to 1.0 in the vray settings. Maybe it's a solution unique to me and my setup, who knows. Might work for you though.

Dan Temple

[cheerioboy]

not sure if this is the solution, but I saw this happening in one of my scenes and I went and looked through all the nodes and made sure the Gamma/LUT settings matched across all machines - this seemed to solve it.

[danio]

Interesting, so you actually fired up max on the nodes and changed the settings in the standard vray dialog? I've just got the dummy copies running on the nodes, I don't think I've ever even started max on them (except maybe once in the beginning?)

[cheerioboy]

I just had the issue again but all the system preferences matched. Just shut down and restarted the spawner which seemed to solve it..