Hi Maru,
Thank you so much for looking into this scene and thanks for all your comments. I actually tried again now in a different scene - with simplified materials and also I ticked the box with caustics in the material slot as well (not only in the performance tab). The main glass material I used this time is the builtin corona material for glass only with caustics on. Also I only have an hdri and a sun. If you think it would be useful, I can also share this scene as it is just a test scene.
The effect looks better now but I still got fireflies as you can see. Attached is the image directly from the frame buffer and another one with the caustics pass overlayed in photoshop (actually with linear dodge) and some retouching. The render had 125 passes and the noise level was almost down to 1.09%
I can understand that users may want to render similar scenes, so I will report it to our dev team for further investigation
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- Thank you for this! I must say - love experimenting and I like to try things that can be absurd, abstract, awkward, etc. To tell you the truth, I looked a lot at some guys that create abstract compositions in Cinema4D and Octane... guys like Peter Tarka, Roman Bratschi, Philip Lück, etc... their work inspired me to try to see if I can do "similar" things with max and Corona...
I do love to also create stuff that goes beyond visualisation, beyond just "let's imitate reality" - in which corona already does a great job. I worked in archvis and really I had amazing results with Corona since 2015, but I'm also a graphic designer and do a different kind of work. I'm also into branding and marketing imaging, love to try 3d for advertising, branding and illustration, I like to play with particles and massFX and to try new stuff, I still have lots to explore even in 3dsmax... and maybe even go into motion (tried already a small animation with corona) so... the sky is the limit...
thanks so much
cheers,
V