OTOY Forums

i'm working on a new interior project.

these are the small rendering test(path tracing 1min) for lighting correction, science i add some light source on the ceiling (which is blackbody emitter) the render slowdown immediately especially on the indirect lights. it's not reflect on the s/px value, but the render result is clearly not good.

i have no idea about this situation. is this normal?

You could try the P.M.C. kernel in 2.47.That should reduce the fireflies.Also maybe try lighting with an I.E.S. file rather then just a Black body emitter.One final thought is also to try enlarging the black body emitter.Smaller sized emitters tend to make large amount of fireflies.