Caustics Multiplier

[CharlyRT]

Hello guys, do u have any plans to include a caustic multiplier?
I know we can multiply the channel in Post but it would be pretty useful to use it directly from the VFB.
Thanks for all your hardwork.

[Avi]

Hi,

Can you please elaborate on how exactly you aim to use this multiplier for caustic from VFB? Is this something you only want to apply in post effects or in a pre-calculation stage of caustics? Something like Light mix? Have you tried Caustics solver settings? These are only visible when you have "Enable devel/debug mode" on in the Corona system settings.

[CharlyRT]

thanks for answering Avi:

sometimes caustics are very subtle due to pool height, lighting conditions, or material setup, etc, the solution for this is to render the channel and duplicate it on Post, i made a mistake saying to use it directly from VFB, what i meant was to have a multiplier value for this porpuse, for ecxample, Vray has it in order to multiply it when u cannot see it and have it in render without a render channel in post.

[Avi]

Hi,

Thanks for the explanation. I understand what you need.

Have you tried increasing the "Max Photon/Iteration" in the Caustic solver settings and see if it helps?

[maru]

Are you interested in a multiplier for caustics intensity (making caustics brighter or fainter) or in a multiplier for the number of photons (making caustics appear with better quality faster)?

[pokoy]

Are you interested in a multiplier for caustics intensity (making caustics brighter or fainter) or in a multiplier for the number of photons (making caustics appear with better quality faster)?

I'm reading it as intensity/brightness... Changing the photon count can lead to quite unpredictable behavior such as (much) increased render times, noisiness and mostly leads to a different caustic look/result, probably not what OP means if he states he wants them to appear brighter.

+1 from me, having to resort to render separate channels and do it all in post is indeed cumbersome.

[TomG]

I personally like this idea. I often find myself doing Render Elements to allow me to apply brightness/exposure to the caustics in post, would be nice to multiply their brightness in the render itself without the post step being necessary (but still an option, of course :) ).

[Avi]

Hi,

We have logged this feature request in our system to be further reviewed by our Dev's. If there will be any update on this, we will let you know.

(Internal ID=1060673630)

[CharlyRT]

Thanks Avi