Hi,
I was trying to get caustic, when ticked caustic in refraction… it turns to black, also saw some links and tried that… but no luck.
https://coronarenderer.freshdesk.com/support/solutions/articles/12000043584-how-to-render-caustics-
In 3D Max road map, it is fixed… no idea its applied in C4D also or not yet…!
Anyone can help…!
Thanks.
…
p.s.
attached is top view screen shot.
If i’m correct… Corona for 3DS Max has new (experimental) caustics feature available only in v4 daily.C4D version doesn’t have it yet, although you can still use different engines (‘experimental’ PPM or VCM) to render caustics quite efficiently.And then again, it could simply be wrong material settings, but since you always forget to provide your study scene file, there’s nothing anyone can do to help.
eg. Corona SA v3 VCM (made w/ Blender)
Just for information, the new caustics developed in the Corona core is not in the 3ds Max daily builds yet, only in internal builds. A forum search for the topic should turn up the info on using the PPM or VCM engines to render caustics in the current versions of Corona, and this Max helpdesk article should apply in principle (just the UI would be different) - https://coronarenderer.freshdesk.com/support/solutions/articles/12000043584-how-to-render-caustics-
Thank you for info Tom, appreciated 
You are welcome, I hope it helps out! And of course I also hope it all becomes redundant as soon as the new caustics are in daily builds 
