The Basics of Compositing Theory: Understanding Brightness

Simon Ubsdell’s Compositing Theory Foundations Covers Ways to Define the Brightness of an Image, and Why that is Useful.

If you want to learn more about the foundational concepts that drive industry standard techniques in compositing, then you should check out Simon Ubsdell’s Compositing Theory series. The series covers things we use every day but may not fully understand. Things like the theory and maths behind blend modes, alpha premultiply and more. His latest installment in the series looks at gaining a better understanding of image brightness and why controlling it is useful in compositing.

The series uses Blackmagic Design’s Fusion as the host compositor, however, the techniques blanket all compositing tools like Nuke and After Effects. “Part Five of this series looking into the basics of compositing theory, this time looking into the various ways we can define the brightness of an image and why that’s useful,” Ubsdell says. The tutorial also covers some interesting image processing operations inside of Fusion