Silverwing Quick Tip: Understanding Caustics (Or why caustics are so hard to render)

This tut is made with Octane Version 2022.1_R5 and Cinema 4D Version 2023.1

Hello everyone.
This week a Day early as I am invited to a birthday Party tomorrow yay.
Its a very theoretical video this week as it lets you peek behind the inner workings of a renderer and tries to answer the question of why Caustics are so darn hart to render in most of todays render engines.

P.s. leave a comment if you have any good Idea for a future quick tip / tut.

0:00 Intro
1:00 Establishing the Baseline
1:58 What Light is doing in Reality
3:14 The CGI Process
5:46 Caustics in Reality
6:17 Caustics in CGI
8:00 What happens with "Fake Shadows"
9:11 Looking at Photon Caustics
10:24 Examples in 3D
11:27 Explaining "Caustic Blur"
13:40 Photon Tracer "Photon Gathering Radius"
15:45 Outro