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Bob Cole
virtual set
on Jan 4, 2013 at 12:59:20 pm

Next week I will be shooting a corporate video with the "look" of a typical late-night talk show.

We'll be using a nice big green screen cyc, shooting on XDCAM for later compositing in After Effects. Although I've shot plenty of green screen, this has a special challenge: The client wants the host (sitting behind his desk) and the "guest" (sitting in a chair) to be directly on the green screen, so that the virtual set extends under their feet. I suggested that we put them on a platform, or a piece of carpet.

We probably will not see many shots framed that wide, but I'm still concerned. I've always lit green screens perfectly even, and don't see a way to do that with a big chair, a desk, and two people sitting. I know that green screens can "take" a shadow as long as it matches the background, but this seems to be asking for trouble.

Thoughts?

Bob C


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Mark Suszko
Re: virtual set
on Jan 4, 2013 at 2:21:22 pm

Well, you may have to do roto work on just the wide shots where the under-chair area is visible and under-lit. I don't know why people are always so scared of roto; maybe its just the tedium of it. Time=$.

Or you might apply extra iterations of the keyer to just that limited area. Or you compromise your lighting to get more soft diffused light into the under-seat area.

If you sat the talent on a couch or love seat instead of a chair, that would be easier than a stool type chair. More conventional for a talk show, as well, if the host is behind a desk.

Don't forget to put somme tracking points on the walls and floor.


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Bob Cole
Re: virtual set
on Jan 4, 2013 at 3:03:16 pm

[Mark Suszko] "tracking points "

We're planning on lock shots - not enough time and money to do tracking.


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Todd Terry
Re: virtual set
on Jan 4, 2013 at 3:28:12 pm

I wouldn't sweat it too much, Bob... head-to-toe-including-floor greenscreen shots usually work pretty well... IF you do a good job on the lighting, and IF you are using a good keyer.

As for lighting, you might need a little special or kicker light on the feet area, but it usually doesn't have to be too much.

As for keying, something like Ultimatte or Keylight should do a good job. I've been really impresssed with Keylight in After Effects lately... it can do some pretty flawless keys.

T2

__________________________________
Todd Terry
Creative Director
Fantastic Plastic Entertainment, Inc.
fantasticplastic.com



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Mark Suszko
Re: virtual set
on Jan 4, 2013 at 3:33:11 pm

I can understand that. My thought was that they can perhaps help get the virtual set wall and floor angles "right", even for a locked-off shot.


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