Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] I need help! => Topic started by: Alex Darby on 2017-09-17, 10:42:33
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Rendered out a sequence and it seems I have some fireflies. It's visible on the cutlery on the far center table.
Checked the scene and materials. Materials are fine but I did have Glare on 0.2.
Could the glare be creating this or something else?
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What image filter should be used for animation? Tent or Box cause it has more blur.
And should Highlight clamping be use?
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maybe this is your case
https://coronarenderer.freshdesk.com/support/solutions/articles/5000529356-i-can-see-bright-pixels-in-grass-
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I can see two possible reasons for the flickering in this animation:
1) Not enough AA - in this case the solution would be to just allow more passes to be rendered, either by spending more time per frame, or by lowering GIvsAA balance, to have more passes rendered in the same time.
2) Not enough GI samples (responsible also for glossy reflections) - in this case the solution would be to either allow more passes, or to increase GIvsAA balance, to have better quality of reflections.
I would do a region rendering, and try both methods to see which one helps. Most probably more passes per frame will be needed anyway.
Using highlight clamping is an option too, but remember that it will kill the dynamic range in your image, so you won't be able to take advantage of 32-bit formats if you need them. I would start with some low value like 1 and see if there are no artifacts like dark highlights, and if there are, increase it to 2, and so on.
Using bloom and glare + sharpen/blur is also a way to deal with strong highlights.
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Thanks for the reply's.
I'm going back to testing still frames to try and remove based on your suggestions.
Thanks.
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I also had some strong fireflies in an interior shot, but lowering the MSI did the job and also decreased rendertimes (of course in exchange with a bit more bias)
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twcg: Thx. Will try.