OTOY Forums

boxfx wrote:Just to throw in my 2 cents, can I ask where this image is going to be used? I ask, because I would consider the amount of noise in the image to be below the level you would get from a real world photograph.

If this is a frame from an animation, then this grain level is far below the level that h264 video encoding will capture

If this image is for print, then the grain is below what most print processes will be able to resolve.

If this is for screen, then jpg compression will remove most of this noise.

As for removing it, make use of the adaptive sampling preview. when rendering to the live view, click the "noise" tab on the bottom of the window to show a green and grey image. Green areas are parts of the image that octane is no longer rendering because it considers them clean enough. Grey areas are still being rendered to improve their quality. If your DOF areas are green, then that means octane gave up rendering them because it considers them clean enough adding more samples wont do anything because the rendering in this area stopped already. If this is the case, you need to lower your noise threshold to make octane resume rendering these ares. Your adaptive noise threshold is currently 0.03 which is a very high quality. To make it even higher, drop this to 0.02 or 0.01.

ps. I find 4x4 "group pixels" tends to give better results overall, ive yet to find a case where the other 2 options are faster or higher quality.