Gamma Variations on Render

[RyanScammell]

Hi there,

I've noticed on some files that I've rendered out that the gamma of the rendered images seems to switch at random over the course of the render. So as an example, take this shot:https://www.dropbox.com/sh/5j42avkeu0d3 ... OE5Ma?dl=0 On the first five frames, we're at one gamma. Then at the next 50 or so we're at a darker gammea, then back to the lighter gamma. Like it's switching between 1 and 2.2. In another post, folks had said that having multipass/aovs enabled make octane render in linear, where having mutipass/aov disabled it might render in 2.2. This particular file though you can see is switching mid-render. This would have all been rendered by a single machine with a single Cinema 4D render queue. That said, I am net-rendering and there are between 2-3 additional machines that would have been helping this render along. So maybe net-rendering is in some ways the culprit here? I can't think of a good reason otherwise that one file would have such variation frame to frame. It's possible the render crashed and had to be restarted at different points, but that would have just been restarting the same file in the render queue. No settings would be changed. Any thoughts? I'm currently on Octane 2021.1.5 but I'm not 100% sure what version I was on with octane when I rendered it but it would have been either 2021.1.5 or another recent one. I'm working in Cinema 4D, rendering in cinema 4d, and running a windows machine.

-Ryan

[bepeg4d]

Hi Ryan,
are you using C4D Team Render with multi pass enabled?

If yes, try to search the correct beauty pass sequence in each client.

ciao,
Beppe

[RyanScammell]

Multipass is checked in the render settings (but I believe this happens by default when I enable the AOV passes in octane). However, I am not using team render. I'm using Octane's net render.

[bepeg4d]

Hi Ryan,
do you have different Nvidia GPU architectures in Workstation and Render-Nodes?

Please write to help at otoy dot com, asking for Beppe, I need to investigate more deeply.

ciao,
Beppe