CShake wrote:

> I rendered the test scene again and found that increasing the bit depth 
> of the output file from 8 to 16 (png) didn't make a difference itself

yes, I was confused about that one. You still get the same intensity
range with 16 bit but with finer resolution. It may still be useful for
you because it means you can use very low intensity light sources to
avoid the clipping effect and still get a high dynamic range.

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