June 21, 2018 at 8:59AM

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Greenscreen vs. Bluescreen for keying

Hello NFS. Does anyone have a strong opinion one way or the other as far as using a greenscreen vs a blue screen for keying in post? Building out a production space for a shoot in July, thanks!

7 Comments

Green is better in my opinion. It's a less likely color for people to wear.

June 21, 2018 at 10:24AM, Edited June 21, 10:24AM

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Alex Alva
1604

Thanks, I was thinking the same thing originally. I've read that green has a more chance of spillover onto the subject... but it does seems that blue is rarely used versus green screen.

Mike Halak

June 22, 2018 at 7:22AM

Thanks for the info, this is comprehensive! My subject will be wearing a white labcoat (LOL no Leprechauns), I'm keen to avoid spillover.

Would you elaborate on exposing the green 1 stop lower than the subject - do you mean building a composite of keyed layers in AE? I'm a bit fuzzy on how to structure multiple exposures. Thanks for taking the time, it's appreciated!

June 22, 2018 at 7:19AM

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Mike Halak
Art Director +
178

Hey Matthias, thanks for providing such detailed responses, this info is great and the setup images + bulb configs are helpful. I've shot a green screen on a small scale, but it's my first rodeo for a larger scale/live action setup. Thanks again!

June 23, 2018 at 9:54AM

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Mike Halak
Art Director +
178

There are times I wish I had gone blue rather than green because of spill. Blue spill especially from a (fake) window is a LOT prettier than green spill. Yeah it shouldn't have been there but....

June 27, 2018 at 8:50AM

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green is better when you shoot with dslr and cameras that shoot in 4:2:0 where 4 is luminance (green), blue had half of infos and most of compression work on color channels.
Blue is better when you need to spill around some subject, today is simple to own or rental a good recorder or camera that shoot raw, 4:4:4 or 4:2:2 in a good quality recording.

July 3, 2018 at 2:37PM

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Carlo Macchiavello
Director
936

Please correct me if I'm wrong, but isn't green used as the green channel has a higher resolution compared to blue and red because of the way photo sites are aligned on the Bayer-filter?

July 4, 2018 at 1:49PM

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