Create a mask from a color channel?

[Joey Foreman]

Something like the Set Matte effect?

Joey Foreman
Editor/Compositor/VFX Artist

[Kevin Camin]

Sort of.

I want a filter to turn my image into a gray scale image based on a color channel; like in Photoshop when you view only one color channel. My plan is to then further work on that gray scale image with levels and then use it for a luma matte.

[Kevin Camin]

Thanks, Dave. Works perfectly!