The following sequence of actions is a recommended workflow for keying an image with the Keyer supertool. You may not need to complete all the procedures. You may also revisit procedures as you develop the key.

• Generate and refine a matte using the Master Keyer matte generator controls.
• Create any necessary patches to remove unwanted gray areas from the matte.
• Refine the matte using the Edge and Cleanup Alpha tools.
• If the image is grainy, apply the Screen Degrain algorithm.
• Remove any color spill.
• Improve the blend between the front and back images.

In the most common use case, the key color you sample will be the one used for screen degraining and spill and blend adjustments. To provide quick workflow, the Master Keyer, Screen Degrain and Spill & Blend initially created by the Keyer super-tool all share the primary and secondary key colors, and mix values of these samples.

If you don't like this key color sharing, the Master Keyer, Screen Degrain and Spill & Blend are all available as separate tools, and there you can set colors separately for all three.