Jeez, I have a thing that is due soon to a client, and Corona has proved awesome for still frames, but I'm getting a bit worried here about the flickering in animations.
The model is under NDA, but imagine three floors with shipping containers, imported from CAD software, so crappy geometry.
The front walls are cut away from the containers, and there are lights (invisible) in each of the three the containers. There are three lights outside the containers.
Materials are super ultra simple, with an AO on the container metal, that is 200 white, and some tech-stuff inside the containers blue. No reflections, no glossiness, no translucency.
The camera orbits counter-clockwise around the building, no DOF, no motion blur, photographic exposure.
PNG sequence, I've tried between 30 and 25 passes per frame, takes just over two minutes per frame at 25 passes at 1080p.
Path tracing, UHD cache, GI vs AA is 16, Light samples multiplier is 2,0, max sample intensity is 20, max ray depth is 25. Standard stuff.
UHD is still frame (I tried animation flicker free too, no difference, at least I think I did.. Let this be a lesson to you all otherwise to write down your settings..) I calculate the precomp from scratch and discard it. Precision is 1,0 and previz is on.
The lights flicker noticeably.
I'll try to re-render part of the sequence with animation on right away and update this post when I have the results.
