I have been making an indoor scene in cycles. After I rendered with 100 samples there is a lot of grain near the windows where the light comes in. I tried 500 samples earlier and it did not help much. Solutions to the graininess in there picture?
Hi, 100 samples are very low for a pathtracer, you need often 2000!
If you render on CPU your tile setting is far from ideal, CPU need small tiles.
32x32 or 16x16 is a good point to start.
Your Light Path setting is way to high, try 1 4 8.
You use a very old version of Blender, we are at 2.69 and 2.70 is around the corner.
2.70 is a lot faster on CPU, try a build from http://builder.blender.org/download
Cheers, mib.