AmethystPendant posted at 2:03PM Mon, 02 March 2020 - #4382326

@JohnDoe641 do you output to Exr or Png, interested because of the clamps being set to 0

Thinking about those clamps should not lead to asking about EXR. With or without those clamps the output can exceed LDR 0-255. The clamps apply to the individual samples being accumulated for each pixel, which is an average of hopefully many samples. When you don't use enough samples to really get a good average, then a single "hot" value can easily produce a firefly. So clamping is to give up some lighting accuracy in exchange for fewer firefly artifacts. It has almost nothing to do with HDR output format.

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