Author Topic: Rendering with Corona  (Read 3431 times)

2024-07-08, 14:41:31
Reply #15

maru

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To reduce those fireflies in the background/out of focus:
1. Use the improved DOF highlights solver - https://support.chaos.com/hc/en-us/articles/4528608272785-How-to-enable-and-control-Depth-of-Field-DOF-in-Corona-for-3ds-Max#h_01H3208VDBVX29VA2HACX56B2V
2. Set highlight clamping to as low value as you can without making the image look bad (but higher than 0) - https://support.chaos.com/hc/en-us/articles/4528471000849-What-is-highlight-clamping-3ds-Max
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us

2024-07-09, 17:40:16
Reply #16

Torsten Angerer

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Hi,

thanks once again for your support!

I already followed your advice, the first pic shows the highlight solver enabled, and clamping set to 1, 56 passes.
For the second render I increased the budget value(whatever that is?) to 8 in the solver,and reduced the clamping to 0.5, with 27 passes.

The second pic looks darker, with less details, but both are free of fireflies and much annoying highlights, at least in my opinion.

Good to know, so thanks again fpr your help!

2024-07-10, 14:56:12
Reply #17

maru

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Always glad to help!

The DOF highlight solver improves the quality of bright "bokeh" spots.
Highlight clamping will always make images darker because it, well, clamps highlights. :)

One note: when using highlight clamping above 0, the output is not "high dynamic range" any more. So if you are planning to do some compositing or need a wide tonal range for other reasons, don't use it.
Marcin Miodek | chaos-corona.com
3D Support Team Lead - Corona | contact us