Hi all,
Newbie here.
I wanted to know how is it possible to get rid of this white fog in my PNG (transparent) image. On a white background it looks amazing, but when the background is darker, then it can be seen well, which is not desired. I would like to keep the shadows, but the white fog does not look good.
I can edit the image in post process, but that workflow is taking too much time.
Any help would be appreciated! Thanks in advance!
Hi,
A trick could be to render your png on black background if you know that you will have a dark background later. I think Iâve read something on that topic somewhere, that shadows are a bit blended with background color. But Iâve never tried.
Another way to get rid of that (the one Iâm used to use) is to make one layer on your render with all your geometries expect ground, and on photoshop put the png file in multiply, and your layer file (which should have no shadows) on top on it in normal mode.
Another solution from someone?
I was playing around with a cube but I think that white fog you see are shadows as well. They just look white since in the normal process they should be f.e. in a separate layer on âmultiplyâ.
Like this is the cube and below is a render pass from the âshadowâ. And I guess that will be the same with your render.
Iâm just not sure how you get the shadow pass to be just the shadow transparent so you could simply put the layer on multiply regardless of the background colour you will use in the end.
But maybe this helps you a bit since itâs not really some kind of light bouncing off but the shadow you actually see. If I use ray mask I can get the shadow to be light like it should be but what I doesnât really work for me is having the object without the shadow.
Just some simple steps.
The second step isnât really necessary, but I should give a clear preview.
You can always bring your image into PS and render out the clown pass if you havenât already done so (you only need to do a 10-second render as quality doesnât matter if you only need the clown). Copy your model onto a new layer, selecting it with the clown pass, then you have a layer with only the model and no shadows on top and the model with shadows underneath. You can then use the original layer with a Levels adjustment layer to darken those shadows to black. Use your model layer to create a mask if needed.
I have tried to change the BG color, but the white is still there.
Regarding Photoshop - I do not have it and I would assume that post process and âfine tunningâ is up to everyoneâs preference. Thus, I would expect the rendering software have full control over things like these.
Thank you anyway! 
I will test this one out! Thank you.
