Hi, I tried using Photo tracing for an interior render of an apartment,
when doing the render in low resolution (1200x800) the image cleans up nicely with a few thousand samples,
but in a higher resolution like 4K, it doesn't seem to behave the same with the same number of samples, I usually get a few lonely photons that don't disappear.
What I also noticed is that if the scene is large the photons become rare...maybe because their emission is spread throughout the scene?
The photon multiplier only allows up to 8, and there is no dedicated pass for photons.
I know that this is still only a demo release, and it is really great, just wanted to let you know these specific problems.
Kind regards
Filipe