looks like a filtering issue. lanzcos ?
you might get away with less bounces, without noticabel quality loss.
with some tricks you could get a better and faster result

cheers,
chris
-- 
christian keller
visual effects|direction

+49 179 69 36 248
chris3...@me.com
http://vimeo.com/channels/96149

Am 14. Februar 2013 um 18:34 schrieb Toonafish <ron...@toonafish.nl>:

Arnold took 2 Hours and 10 minutes with 5 Diffuse bounces and AA set to
10. Setting the diffuse bounces to 16 as in Octane was just slowing
Arnold down too much.

https://dl.dropbox.com/u/4271217/Arnold_Classroom_AA10_DiffSamples-7_DiffRays-5_2h-10min.png

Still some fine noise in the DOF, and weird aliasing artifacts in the
high contrast areas around the windows and the lights.

- Ronald


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