> If your shadows from area_light looks banded or grainy, the cause is a to
> sparce aray of components. Try with larger values, then add adaptive N
> (start with 0 and increase as needed if you get artefacts) to use adaptive
> sampling that will greatly accelerate the rendering.
> I commonly use aray of 17*17 or 33*33, even 65*65 without to much slowing.
> If the area_light is surrounded by several objects, it's effect will vary
> accordingly to the relative positions. Use circular orient to emulate a
> spherical light.

I wasn't saying anything about banded area light shadows.
Unfortunately, increasing the resolution of the grid won't change how
POV-Ray calculates highlights. Some people have tried using a grid of area
lights instead.

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