OTOY Forums

Is it supposed to take a long time to clear up? I do a lot of macro and portrait shots and when I use DoF it seems to take hours to get clean, whether I use pathtracing or PMC. Sometimes it takes so long I just stop it even though it's still really grainy.

A weak area of Octane is specular highlights on out-of-focus surfaces, unfortunately. Ways around it are the obvious things like increasing DoF, framing the shot to avoid highly reflective surfaces near the camera, or rendering Z-depth pass adding DoF in post.

riggles wrote:A weak area of Octane is specular highlights on out-of-focus surfaces, unfortunately. Ways around it are the obvious things like increasing DoF, framing the shot to avoid highly reflective surfaces near the camera, or rendering Z-depth pass adding DoF in post.

That's rather disappointing. I wish there was a way it could be better.

Sorel wrote:That's rather disappointing. I wish there was a way it could be better.

Me too. Setting Caustic Blur and GI Clamp to 1.0 helps get rid of fireflies, but I doesn't seem to effect the type of noise we're talking about. The only thing's I can think of that don't involve changing your scene would be to render out at double resolution and downsample, or bring it into Photoshop / Lightroom and apply some noise reduction filtering, or both.
Edit: Not sure why the video clip doesn't play on iOS, but it's showing the difference between the later methods. Normal resolution is 720x480 @ 1,000 max samples. Double res was 1440x960 @ the same 1,000 samples.