Chaos Corona Forum

Chaos Corona for Cinema 4D => [C4D] I need help! => Topic started by: Redeemer on 2019-09-02, 16:18:27

Title: Highlight fireflies
Post by: Redeemer on 2019-09-02, 16:18:27

Hello fellow Corona users,

I'm busy with a scene which has a strong dof and is lit by a sunny hdri. The problem is I can't get rid of the fireflies that appear in the highlights. I tried various solutions but nothing seems to work properly:

Changed the sampling balance to different settings (from 16-2 to 4-2 to 8-4 and so on) as explained in the different topics about this problem.
Blurred the HDRI
Changed reflection and refraction to a slight blurred reflection/refraction
Denoiser (firefly only and high quality)
Highlight clamping

The attachment is a rendered region of about 300 passes.

I am curious what else could work in this specific case. Thanks in advance!

Title: Re: Highlight fireflies
Post by: snakebox on 2019-09-03, 01:52:37

Would you be able to provide a sample scene maybe? at this point it might be easier if people can have a quick go at it themselves as often with these things, it's a fine balance between settings and approach.

Title: Re: Highlight fireflies
Post by: Redeemer on 2019-09-03, 09:05:56

Thanks for your reply and your willing to look into it. I will prepare a scene later today.