Secondary Color Correction Primer - The Art and Technique of Digital Color Correction - page 193

Fig. 5.42
Fig. 5.43 Before and After shots of the ultralight with secondary corrections.
User-Defined Shapes
Many file-based systems, like Lustre, Baselight, Resolve, Color, or Sym-
phony allow you to hand-draw organic shapes to define these geographi-
cal areas on the screen. This feature is a very powerful tool that I both
encourage you to use and discourage you from using.