Grainy Reflections

#1

Can anyone help me with the grainy reflections I get when I use the chrome mat. I tried increasing the glossy samples and got no improvements. I am using photometric lights to cast reflections and think that they may be causing the grain. Any recommendations?

http://picasaweb.google.com/alexburr832/Desktop?authkey=Gv1sRgCICi18aVpIGtOQ#5561376576920047426

#2

yeah looks like the shadow sampling on the portal lights is too low

#3

Also, you could bump up the glossy reflections precision in the render globals. When test rendering reflective objects it’s a good idea to change the environment colour fom black. Or use a .hdr image.

#4

try to interpolate, and set higher samples on the shader !

#5

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