Working With Fusion Delta Keyer and a Clean Plate

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The delta keyer is at it’s core a color difference keyer which blackmagic added to Fusion 9. It is probably one of the most advanced and most customizable keyer in Fusion and it can be used together with a clean plate input. An additional clean plate generator is available as well.
When using the delta keyer, your basic workflow will follow these steps:
Select background color or clean plate
Adjust pre-matte ranges (if not clean plate), erode pre-matte if it is too tight.
Adjust matte with threshold values and clean foreground / background
Adjust the despill settings and take care of edges in the Fringe tab.

I will show you in this tutorial how to use the keyer and how to fine tune your matte and final image with all settings available in this new tool. I will also provide a little bit of background information about color difference keyers by showing a very basic version of a color difference keyer created purely from channel booleans and a color corrector. (Based on the version from Steve Wright’s book: Digital Compositing for Film and Video).

Green screen plates used in this video:

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