It seems to be focal blur week this week, so I'll ask a question too :)
When I use focal blur in a scene with really bright spots, it seems as if
POV-Ray doesn't use the real brightness, but the clipped values.  For example: a
blurred spot with a brightness > 1 doesn't look any different than a blurred
spot with a brightness = 1.  That's too bad, because I really like the effect in
photographs where focal blurred lights produce bright circles.

Is there something I'm doing wrong, or is this just the way POV-Ray's focal blur
works?

cu!
--
camera{location-z*3}#macro G(b,e)b+(e-b)*(C/50)#end#macro L(b,e,k,l)#local C=0
;#while(C<50)sphere{G(b,e),.1pigment{rgb G(k,l)}finish{ambient 1}}#local C=C+1
;#end#end L(y-x,y,x,x+y)L(y,-x-y,x+y,y)L(-x-y,-y,y,y+z)L(-y,y,y+z,x+y)L(0,x+y,
<.5,1,.5>,x)L(0,x-y,<.5,1,.5>,x)               // ZK http://www.povplace.be.tf

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