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Green clothing with greenscreen [ANSWER]

Posted: Fri, 13th Jul 2007, 10:36pm

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AzGunrunner

Force: 10 | Joined: 5th Jul 2007 | Posts: 52

Member

If you are filming a subject / character whos costume has a green in it(Not the same shade as background) will the cuase parts of the Actor to be lost? If so is there a way to correct this? I have the Green backdrop and want to avoid getting a Blue screen to replace it.
Thanks in advance
Posted: Fri, 13th Jul 2007, 11:38pm

Post 2 of 6

SilverDragon7

Force: 2265 | Joined: 29th Jun 2006 | Posts: 1990

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Rating: -2

Well more or less it depends on the quality in which the film comes out.

If the quality is good then no, it wouldn't effect your actor.
Posted: Sat, 14th Jul 2007, 12:02am

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Arktic

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I am confused, the quality of your camera really has nothing to do with it.

You can have the best camera in the world - but if the green on the costume is similar ENOUGH to the green in the chroma cloth, then yes, you run the risk that the green will be keyed out along with the backdrop; unless you have a great backdrop and lighting, you're going to have to key a range of greens out (this is what you're changing when you alter the black & white points of the key settings).

However, to preserve the green sections of the actor's costume, you can simply apply a freehand animated garbage matte around those sections if any of them do get keyed out. I've done this in the past, and it's usually a quick and easy process, as the mask doesn't need to be hugely accurate.

I hope this helps smile

Cheers,
Arktic.
Posted: Sat, 14th Jul 2007, 2:43am

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Wizard

Force: 5941 | Joined: 18th Jul 2003 | Posts: 555

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To concur with Arktic, it is possible that parts of your subject will be keyed along with the screen, provided that the green is within the parameters of the filter, in which case, depending on the complexity of the shot, using a freehand garbage matte to retain the sections of your subject that have been removed by the filter should be relatively straightforward.

It is worth noting, however, that in order for a freehand garbage matte to be effective for this purpose, you will need to change the shape from transparent, to opaque. If you have any more questions concerning this, please feel free to ask.

Welcome to the site.
Wizard.
Posted: Mon, 16th Jul 2007, 7:57pm

Post 5 of 6

AzGunrunner

Force: 10 | Joined: 5th Jul 2007 | Posts: 52

Member

Thanks folks. This is a big help. Not easy being a Newbie!
Posted: Mon, 16th Jul 2007, 10:04pm

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SketchWork

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We had an instance like this and got round the problem by using a "Key Grade". Thsi enabled us to get a really good key on the greenscreen and tweek it to exclude the shade of green in the costume. To enhance this use it with a garbage matt to hide the green in the costume, but this way you have to track the actor and the garbage matt.