I recently started making some renderings using the new rtpict script and very much appreciate the speed boost! Thanks for including it in the most recent release.
One thing I noticed is that visually, the noise characteristics are different when using rtpict vs. regular rpict. I’ll give an extreme example, just showing some light through a BSDF shining on the floor of a simple box model, but I see similar effects to some degree in most renderings.
Using the same settings, the image on the left was made with rpict and the image on the right was made with rtpict:
Statistically these images are basically the same (min, max, average, etc.), but one is more “splotchy” and the other more “scratchy.” I can clean up these artifacts by adjusting the options appropriately, but I’m mostly just curious if anybody has thoughts about the differences between the two methods that cause this effect.