soft shadows

[stanslavov]

control soft shadows (vraysun) with:
size multiplier (soft shadows) + shadow subdivs (soft quality)
that is

[DaForce]

Yep thats right.
Thats what its for

[CCS]

However.... subdivs will control the quality of that blurry shadow edge. Try low subdivs on that scene. Main shadow will look great. Edges (area shadows) will look terrible.

So, size controls amount of fuzz and subdivs controls quality.