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Inner Shadow Effect? [ANSWER]

Posted: Tue, 17th Jul 2007, 2:28am

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jdmkenji

Force: 760 | Joined: 17th Jun 2006 | Posts: 38

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Is there an "Inner Shadow" effect like in photoshop. The reason is that on some green screen compositing sometimes there's a "spill on the character."

One example is on a shot where a person is present and it's meant to be "dark". Applying the Spill Control feature blends the green... since the background is near black, it looks like there's a lighter border around the person... If you apply the Erode white option it then cuts of certain features that person and it makes him/her look abnormal.

Simply applying an "inner shadow" option might then mask this "border" and blend it in with the dark background.

Let me know if this is already an option or if there's a way to achieve this.
Posted: Tue, 17th Jul 2007, 6:11am

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

There isn't really an inner shadow tool as such, no. There is the spill suppression tool, which I believe you mentioned. You might try adjusting your key settings to get the edges a bit tighter. Color spill such as you are dealing with can often be minimized by placing a greater distance between your subject and the greenscreen while filming. The farther apart they are, the less spill you will get.

Another idea which I've never tried, I'm not ever sure if its possible, is to use the Light spill composite tool, and switch the color of the spill to black. I'm not sure if you can change the blend mode to anything that will let the black show up, but you could look into it.
Posted: Tue, 17th Jul 2007, 5:54pm

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jdmkenji

Force: 760 | Joined: 17th Jun 2006 | Posts: 38

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thanks. will give that a try.
Posted: Tue, 17th Jul 2007, 6:23pm

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jdmkenji

Force: 760 | Joined: 17th Jun 2006 | Posts: 38

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Okay, question: where can i find the "light spill" function?
Posted: Tue, 17th Jul 2007, 7:14pm

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Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

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SuperUser

Click "Composite" on the timeline, and it will be one of the tools in the toolbox.

I tried this technique out quickly, and you can't actually change the color of the light spill, but you can play around with the blending options. I'd suggest trying Darken, Color Burn, or Overlay to start with, but play around with the various options and see what works.
Posted: Tue, 17th Jul 2007, 8:22pm

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jdmkenji

Force: 760 | Joined: 17th Jun 2006 | Posts: 38

CompositeLab Pro User

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Gracias Axeman... fast response as usual. Thanks!