Studio 21.1.1
Module 10 · Fusion
LESSON 10.01 · 50 MIN PRACTICE

Green screen, spill, and edge integration

Keying separates foreground from a background color. A believable result also requires edge treatment, color integration, and a plausible new environment. Removing green is only one part of the work.

What you’ll be able to do

Create a usable matte and integrate its edges into a new background.

ACTUAL RESOLVE INTERFACEView full size ↗
Fusion page: viewers and connected compositing nodes
Fusion page: viewers and connected compositing nodes Reference example from the DaVinci Resolve 21.1 manual, page 34. Software screenshot © Blackmagic Design. The demonstration media and selected settings may differ from your project.

Work through it

  1. Use a well-exposed green-screen shot with clean separation where possible. Add an appropriate keyer such as Delta Keyer and sample the backing color.
  2. Inspect the matte separately. Preserve fine hair and semi-transparent edges while removing unwanted background. Use a garbage mask to exclude areas that never belong to the subject.
  3. Reduce green spill carefully without making skin or clothing unnaturally gray. Inspect the result against both a neutral background and the intended scene.
  4. Match light direction, contrast, softness, and texture. Check motion-blurred edges and any transparent objects, then render a short test.

A mistake to avoid

Crushing the matte to solid black and white can remove natural edge transparency. A hard cutout is not the same as a clean key.

Your turn

Composite a short keyed shot over two different backgrounds. Write down which background integrates more convincingly and why.

QUICK KNOWLEDGE CHECK

Why inspect a key over multiple backgrounds?

Your notes

Write down what worked, what surprised you, and what to try next. Saved on this device.

Previous lessonNext lesson

Original practical lesson · Open the in-house resource shelf for practice files and definitions. Completion records your self-assessment, not certification.