This is for 
Hive account@brentpatterson (on twitter), who kindly shared a file to experiment with. I am perfecting my sample compression through layers - to later composite them with blurred alpha mask edges. So far it's working! (x4 128 samples = 512 samples!) About 4'p/f
I have to admit, I first forgot to add transparency to the render (why isn't this activated when file output is RGBA?) So now I'm just doing a 25% 1" animation render test. If I don't see any noise, I'll blow it up to 100% and check again.
