“`Spot lights casting caustic photons (millions) Object casting caustic photons (glass material with disperssion) Search radius on caustics set to like 0.1 or 0.03 depending on the shot higher values = more blur, lower values = more tiny dots of light If you want very very detailed caustics crank up spot lights to 9-10 million and search radius down to like .01 add photos until you’re happy“`