Secondaries with the Pros - The Art and Technique of Digital Color Correction - page 246

Fig. 6.65 This is the base, semicorrect image with a primary.
Fig. 6.66 This is the data for the primary correction on the base image.
To create his secondary correction on the lion, Lovejoy combines two
qualifications. First he qualifies the lion using an HSL key. His HSL quali-
fication goes a little “broad,” selecting some portions of the image beyond
the lion, so he adds a circle vignette around the lion as a “garbage matte.”
With the lion qualified, he lowers the saturation of the lion. “It's hard to get
a perfect match out of two widely divergent sources. You can see here that