I'd like to know how to use fog a little better, especially in this particular case. I want to get some fog in the trees past the building. My attempts so far have not worked very well. I think I'll probably ended up using a z-depth pass instead, but if anybody has any ideas for how to get fog to do the same thing, I'd greatly appreciate it. Another actual problem is that I'm getting a weird diagonal line here in the middle....whats that all about?
Below are renders with and without the fog.
Below are renders with and without the fog.
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