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longrayjohnson
08-13-2010, 11:53 AM
hi,

i got superbright pixels on reflective material when using hdri with a bright sun in it.
can't get rid of it.

Stellios
08-13-2010, 12:50 PM
in mentalray you have to clamp everything on the sample level, im sure its teh same for vray, look around for lense shaders

irwit
08-13-2010, 01:37 PM
try sub pixel mapping, that can help, also as long as you dont need to tweak too much in post clamp your output to 1, that will solve it and speed up your rendertime by a lot.

longrayjohnson
08-13-2010, 02:29 PM
sub pixel mapping didn't work and i need 32bit as i work with linear workflow.

irwit
08-13-2010, 02:34 PM
clamping your output and linear work flow are separate things, one has nothing to do with the other. The only thing clamping does if effect how much range you get from the image in post.

bigbossfr
08-13-2010, 05:21 PM
Hide the sun.
Subpixel on
Smooth filter sampling (like area, gauss)

longrayjohnson
08-14-2010, 05:24 AM
thanks bigbossfr, that solved it.

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