When I take an object and click "quick smoke" and set the flow type to fire, it looks very good in the viewport. However the render looks terrible. Here is an example:
It, for some reason, has a black outline. I saw this problem much more when I too the monkey, set to to quick explode, then added a smoke domain. The viewport looked so much more better then what the final result looked like.
Also, is there a way to make the fire not fill up the domain and look like a square in the final result?