james120479 Posted February 18, 2013 Share Posted February 18, 2013 I come across this every time I try and create architectural interiors and I can never work out why. My interior space is completely enclosed and solid (I have a material override on in the render setup), yet I still get light leaking through the corners of my room. I have a lighting setup using MR Daylight and a skylight. Here is a screenshot of a test render (which I would have thought would be completely black as there should be nowhere light can enter from the outside) and a screenshot of how my floor and ceiling intersect with my wall Does anyone know what causes this light bleed and how I might prevent it? Thanks James Quote Link to comment Share on other sites More sharing options...
Raudel Solis Posted February 19, 2013 Share Posted February 19, 2013 Sample size look for something like that in Mental Ray I use Vray and i encountered the problem yesterday, I fixed it today when i realized my light cache sample size was too small it was set to .001 .006 is acceptable .02 is default i believe. Post your render settings "Screen shot of render settings.." Quote Link to comment Share on other sites More sharing options...
spittle Posted June 24, 2013 Share Posted June 24, 2013 Hey James. I think Raudel is correct - the problem is that your photons are being interpolated through your walls as some are hitting the roof, and some are hitting the walls. So a fix would be to set the maximum sampling radius in your GI settings to be smaller than the thickness of your walls. Or if you have a scene and you don't want to mess with GI solution then make the walls a bit thicker. Quote Link to comment Share on other sites More sharing options...
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