ExponentialHeightFog giving dark "frame"

C86G

Hey, it´s me again (sorry )

I got a scene in Unreal and I use the ExponentialHeightFog and want to render a sequence with a camera. However, I get a very visible "frame" from the fog, when the camera did not move for a couple of frames and that ugly frame only disappears after the image has moved for a bit. I have no idea how to fix this and google dind´t offer any help.

I could make another keyframe for the camera before the actual animation and have it move. But since the actual sequence I want to render starts without camera movement, I cannot get rid of this unwanted effect.

Please, any help is greatlly appreciated!


Oh, and since I´m here:
For some reason my rendered sequence always starts with a fade from black. My workaroudn is to start teh sequence earlier and then delete the unwanted images that contain the fading. What is causing this fade?



Thanks!

Obscura

The fade must be because of the auto exposure. Haven't met your another issue.

C86G

Deactiviating the auto exposure was the first thing I did when I started working on the whole project.
So it must be something else : /


This is the unwanted effect:

Obscura

Does that unwanted effect appear only when the camera moves? And does it appear on the edges of the screen?

C86G

Yes, it is always the edges and it only disappears when those visible edges move for a couple of frames.

Obscura

That is a sickness (downside) of the volumetric fog. Its because it uses temporal accumulation.  There is a console command called "r.volumetricfog.historyweight". Adjusting that can reduce the ghosting, but slicing artifacts may appear!

C86G

Will try asap. Thanks : )