3D keyer
The 3D keyer is a secondary-selection tool that keys off samples you paint onto the image rather than off three separate HSL sliders like the qualifier. Because it works in a three-dimensional color space, it often produces a cleaner selection on tricky subjects such as skin. It offers four modes — soft (a gentle fall-off, recommended for most work), flat, tight (a strict, precise cut), and luma — plus chroma-tolerance and chroma-softness controls to expand or feather the selection. It shares the same matte finesse tools as the qualifier, so you clean the edge the same way.
First used in: 2.4 · Secondaries