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ilay
10-26-2011, 02:42 PM
Hello
My colleague and i have question: What do need to do with light options for preventing of bottom line appearing...dark narrow line like shadow

http://imageshack.us/photo/my-images/269/post91681319461344.jpg/

Srek
10-27-2011, 06:53 AM
That near to the lightsource the angle between it and the lit surface is near 90° so not many photons will reach that area. At exactly 90° no photons will reache the surface. It's a sideeffect of the lightsource beeing perfectly flat.
Cheers
Björn

deepshade
10-27-2011, 12:23 PM
Based on that analogy...
..tilting the light should solve the problem - but it doesn't

I think it's more like a distribution problem near the light?

Srek
10-27-2011, 01:03 PM
Sample distribution will add to the problem. More samples should make the edge less prominent.

deepshade
10-27-2011, 01:19 PM
Do you think something could be done to improve the distribution at close proximity?

Srek
10-27-2011, 01:53 PM
Not without compromising over all light distribution and not without increasing rendertime.

ilay
11-06-2011, 07:16 AM
Björn, thanks for reply. Strange, several render engines like fR or vray have not such side-effect.

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11-06-2011, 07:16 AM
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