Lighting variation with rotated HDRI animation

[marcusbuettner]

Hey hey.

 

I've got a problem with a rotating HDRI.

When I render out an animation where the HDRI is rotating (only camera is moving), there occurs varations in the lighting periodically. Seems to be a 5/6-Frame-Range

 

Example:

1. Frame - too dark and dull

2. Frame - less dark

3. Frame - correct lighting

4. Frame - dark again

5. Frame - more dark.

...

and so on.

 

This problem only occurs when the HDRI is rotating. If there is no rotation, everything is fine. I'm rendering with Brute Force. So no GI-Flicker.

 

Ideas? Someone? Would be wonderful

 

Best, Marcus

 

I attach 3 examples. The third on is correct, btw.

 

 

 

[hyperfocaldesign]

I'd ask if something was blocking your light, but those are some tall towers so its unlikely.

 

I found this interesting as I've encountered similar strange issues rotating HDRIs in Blender Octane, ie I'll rotate to 90 degrees, the lighting pretty much breaks, but then if I rotate to 90.01 degrees, it fixes itself. Perhaps something to do with the transformation that occurs from lat/long to the environment sphere?

Edited May 18, 2014 by hyperfocaldesign