Caustics work in Interactive Rendering but not in normal rendering process

[szymon.bochenek]

Hi!

Can you help me guys? When I turn on caustics (in material seetings and in rendering settings) I can see this effect only in Interactive Rendering but this settings do not affect final rendering process. Whats wrong? How to show caustics effect in final render? See attached file.

All the best!
Szymon

[TomG]

Which host software and version, and which version of Corona?

[maru]

Caustics are known to produce slightly different results depending on the resulution you are rendering your image in.
Are you rendering IR in relatively low resolution (e.g. less than 1080px) and production rendering in a relatively high resolution (e.g. 2 or 4 times larger than IR)?

[szymon.bochenek]

- I use Max 2022 new update + newest Corona release.
- Yes, I do first IR with small resolution then render in more than 3500px so this difference is between these two options.
I see that there are some colours on this shadow in CoronaSun Channel file after rendering (so I can put it in postproduction but in IR i looks much better without post).

BR,
Szymon