I'm having a problem rendering a scene using Next Level 3D's Shooting Range. I'm rendering a 4K PNG Image Sequence with Super Sampling set to high, but the ceiling looks strange as a single image and when put together as a sequence it constantly flickers. Any ideas as to why this is happening? The ceiling should be dark gray.

If you are moving the camera, anything more than "30 feet" flickers more (just a guess for distance) 

I had a similar ceiling in this video originally and I had to take it out, as the camera starts scrolling horizontally between 1:10 and 1:32.

This still flickers a little in the dark as the camera approaches the light box 0:36 - 0:41 seconds, then it stops as it gets closer.



You can try a different ceiling or you can try changing the camera zoom instead of moving it might help. This issue is reported pretty often.

Creator of the free website:
PixelDatabase.Net
A Free Online Text Based Image Editor

Looks like famous opacity artifacts (although a video would have shown better)
You probably has an opacity map for some ceiling materials (or it less than 100).
Try rendering with smaller viewport.
Try to use this ROV patch: https://forum.reallusion.com/FindPost437353.aspx
Try disabling SS.

@Data Juggler
You have a different problem there. When using low angle cameras (150-200mm), try moving objects further apart from each other (like that shoe sign from background).
Also play with "Near Clipping Plane" camera property (increase it), until background object is no longer *leaking* through foreground one when camera is far away.