Ingmar Franz (duerer)

3 answers · asked · Lesson: HDRI World Backgrounds · Course: Fundamentals of Digital Lighting in Blender

What about multiple importance sampling and HDRIs?

Some time ago I've seen a video where the artist used an HDRI together with Multiple Importance Sampling for the illumination of a table with a place setting (among this a water glass with caustics) .  When do I need this? Could you please explain the technical background closer?