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Green Screen with Overlay controls

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Is there a way to key out a green screen background when using Overlay? I've got some background plates I shot, but I'd like to shoot some models in front of green screen and compose them in Capture One to where I'd like them to fit in the background. I was attempting to do it with a program called Chroma Key Live, but that app doesn't see my 5D MIII.

If there are other software suggestions, I'd appreciate any help.

Thanks in advance.
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  • brianmerwin
    Greetings!

    The short answer is no, not really.

    I typically handle this in a couple of different ways though.

    If the template you're using is essentially a layout go-by (type treatments for a magazine cover for example) I'll open those templates in photoshop, and do a quick knock out of the important elements and eliminate anything else - then save the image as a PNG with transparency. That way you can have a true overlay as a layout guide that shows where page elements will be showing up and you can compose the image accordingly.

    For situations where the image is a true background and you're just looking for placement of the subject, I will simply load the file in to C1 using the overlay tool and then fiddle with the opacity so it's low enough i can see important background elements.

    Occasionally, I might go as far as to mark up the background in photoshop by drawing a box on the image to create a clearly visible frame for what the image borders need to be, or maybe even erase a hole in the BG specifically where I want to see the subject in the BG.

    The second method is probably closer to what you need, but so far as I know there is no application on the market at the moment that offers the kind of keying functionality you want AND all of the tethering & RAW adjustments you'll get in Capture One..

    My two cents regarding chroma key:
    That out of the way, I personally would skew toward shooting the subjects on mid-grey rather than green screen because in the still world you're going to get a much cleaner knockout by using a clipping path rather than trying to use blend modes and you'll avoid a green color cast on the skin. ChromaKey with Film & video are more forgiving in that regard because you can't pixel peep to see a bad cutout or color bleed, but with stills it's better to avoid any possible color casts whatsoever.

    Good luck!
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