VFX Compositing 101: Combining Layers Like a Pro
2026-09-01 8 min read Anmolofficial Team
Compositing is where all the pieces of a VFX shot come together. A great 3D model or simulation still needs compositing to feel like part of the real world.
Here are the essential compositing techniques every VFX artist should know:
1. **Green screen (chroma key)** — The simplest way to isolate a subject. Light the green backdrop evenly, shoot the subject, then use a keyer (in Nuke, After Effects, or DaVinci Resolve) to remove the green and reveal the background plate.
2. **Matte extraction** — When green isn't possible, extract mattes from luminance, depth, or object IDs. Each matte defines which pixels belong to which layer.
3. **Integration lighting** — Match the color, direction, and intensity of light in your CGI to the live-action plate. Add realistic shadows and reflections where CGI meets the real world.
4. **Color grading and matching** — Every camera and render engine has a different color science. Grade your CGI to match the plate's white balance, contrast curve, and film grain.
5. **Edge treatment** — Real cameras have depth-of-field, motion blur, and slight chromatic aberration. Add these to CGI edges so they don't pop out as too sharp or clean.
Compositing is the art of making the impossible look ordinary — when done well, nobody notices the VFX at all.