- Thu May 02, 2013 5:21 pm
I looked at the file and it seems the many small strong light sources in the HDR together with the semi rough material makes it difficult to render. You can speed it up quite a bit in this case if you blur the HDR image, by a 10-15 pixel amount, maybe even more. You will see that tiny noise disappear faster. A few HDR images are more "difficult" than others unfortunately, but blurring usually helps in these cases and it will only affect the lighting minimally. It's very rare to need an SL of 25 or higher, usually 18-20 is enough even for difficult interiors.
I understand the problem you had setting this up, the HDR wasn't taken from the location it should have been, it's too close to the road....
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