Quick advice needed - IR map leaks

[Pixelab]

i have these dirty leaks on my rendering. Do you hae an advice to get rid of it without drastically increase render times ?

Does check sample visibility is useful when my elements have a thickness ?

thanks in advance !

an extract of the 1920x1600 rendering, GI : IR map in first bounce and lightmap for secondary, both at 1.0 multiplier. Exponenetial color mapping.



and my settings

[natty]

Hi ...try this ...

Interp samples put back to 20..
clr thresh put down to 0.22 ..
sample look up put to Overlapping..

your Lightcache ..

subdivs could come down quite a lot ... maybe to say 1600
untick store direct light
and prefilter = 100

see how you go ..

[Pixelab]

thanks a lot natty !

I've made some tests before your answer and i found a good compromise in lowering IR map settings and unchecking store with IR map on my huge invisible vrlight (which i forgot to mention )

Nevertheless, your advices will be very useful for me ! they gave me the courage to make another series of tests

[natty]

Good luck ..

[Pixelab]

A quick test that permit me to extrapolate an acceptable rendering time of 10 hours for the final image



The settings are Natty ones + an unchecked strore with IR map for the Vraylight

thx again !

i'll post the final result in the "renovation of a gallery" in image uploads folder when finished