I want to render a scene where light shines through a ball with holes so I get a dot-pattern similar to a disco ball. (see pictures) The problem I have at the moment is that my render is very noise and I just can't find a way to get rid of it. I tried quite a lot of different "solutions" that are supposed to fix it but with no success. Using more samples also doesn't really help. (I'm using 500 samples) I hope someone can help me with it.
I uploaded the pictures here: http://imgur.com/a/CwUgR and the .blend file here: http://koncake.bplaced.net/blender/wasserglaubich.zip
(I couldn't use blend-exchange because the file was to big)