I never even once managed to see any kind of caustics in my renders. Would anyone of you be so kind and give me some tips on how to achieve them? I followed your path but no caustics what so ever. I tried water as a simple plane and as a box, used displacement, checked "caustics" in the refraction channel and checked volume as well, although I'm not quite sure what values I'm supposed to use.
Hi, there are many ways to achieve caustics. Here an example:
1st-render settings: in performance settings enable devel/debug mode; in develpment/experimental stuff under basic configuration in render engine select Bidir/VCM.
2nd-model a swimming pool and assign a corona material with diffuse white 80%.
3rd-insert a plane for water surface: for it use a material with no diffuse; activate reflection; activate refraction; activate opacity with brightness 50%; activate displacement with c4d_water shader in texture; activate volume with color 5% cyan and absorption distance 5cm (or more depending of the plane water surface size), volume scattering deep blue color, brightness 25%, mix mode add, mix strength 50%.
4th-standard corona sky and corona sun, insert corona camera with exposure -3(EV).
I wish this will help you.