View Full Version : Area light distribution

10 October 2011, 02:42 PM
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

10 October 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.

10 October 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?

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

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

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

11 November 2011, 08:16 AM
Björn, thanks for reply. Strange, several render engines like fR or vray have not such side-effect.

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11 November 2011, 08:16 AM
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