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Noisy Shadow Pass

Posted: Tue Jul 08, 2008 2:54 pm
by ticket
Hi,

I've tried to render a shadow pass (M~R 1.7, OSX 10.5.4) for the scene below to have more possibilities when it comes to composing our logo into different backgrounds.

Image

For that I needed the shadow pass but it comes out full of noise. Tried it in Studio and Maxwell Render, results are identical. The scene consists of 2 objects and an emitter object. Materials are nothing fancy.

The four images are from different sampling levels. As you can see it get's worse over time.

ImageImage
ImageImage

Any hints what I'm doing wrong here?

Posted: Sun Jul 13, 2008 4:56 pm
by bjorn.syse
It does seem to get worse, but I'm not sure. What sample level have you gotten it to?

Posted: Sun Jul 13, 2008 10:23 pm
by ticket
The last image (bottom right corner) is SL7. As the SL rises the image becomes more and more white until there're no spots anymore and you end up with a completely white image.

Posted: Sun Jul 13, 2008 10:27 pm
by bjorn.syse
What? that's very strange. Sorry, I've never seen it happen before. And still, there is a shadow, that's obvious in the first image.