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Proper chroma keying for scruffy hair
Hi,
I do a lot of green screen work but am restricted to work on FCP for the moment.
I use color smoothing, chroma keyer and spill suppressor and am able to get good results for the body and clothes of the models but its their HAIR that is a problem.Whenever we shoot close ups and the key light is setup with a softbox, the blondes always have far too much green in their hair (I already know that light is reflected from the green walls, so we have tried our best to aviod that)
Their hair always has some distortion whenever i key out the green.
Any tips?
Thanks
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3 Replies
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YOu have to use a different keyer. The built in FCP ones really stink, especially when it comes to hair. The problem that you are facing, however, is that blonde hair has some green tint in it. This is why you need to shoot blond people on BLUE screen, not green screen. But, you have this now so you need to work with it.
You can try to send this to Motion and use the PRIMATTE keyer….that is far better. And there are third party plugins that work very well….I have and like DV Matte Pro by DVGarage. Very simple and very powerful.
Shane
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I have been in a similar boat, doing a lot of green screening – and blonds are always more difficult. We acquired Primatte Keyer Pro (an FCP plugin) from Red Giant – which works great – better than the native FCP filters you are using… I used to use the same steps you are, but Primatte works almost flawlessly in a couple of mouse-clicks. I recommend getting this if you have the budget — roughly $400 I think.
Second tip, we shot a blond in studio this week, and found that adding a blue gel hair light helped take out a little of the green spill we were seeing in the edges of her hair… not sure if any lighting experts reading this agree with our approach, but it worked well for us.
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There’s now a Keylight plugin for FCP. It’s another excellent keyer. https://www.thefoundry.co.uk/pkg_overview.aspx?ui=76B1D869-EA48-4D89-8F13-FDE18802BCF8
With green screen, majenta (minus green) backlight will kill green.
John
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