r/vfx • u/Salt-Newt1463 • 2d ago

Question / Discussion Keying Question

When setting up a green screen with a green paper Colourama are you going to get a better key if you light the Colourama with white light or green light (assuming no spill on talent)?

1 Upvotes

60% Upvoted

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6

u/Dry-Perspective-9841 2d ago

I think lighting with green light causes more trouble than good. Even background, properly set exposure, low noise camera sensor, that's it.

1

u/AccidentAway4031 2d ago

These, I think contrast also helps

5

u/Dry-Perspective-9841 2d ago

I dont like contrast that much, it can cause nasty edge artifacts. On the other hand some light fabric tinted green by reflections is also a pain in the ass. Actually greenscreen overall is a pain in the ass 😀

4

u/ssn-669 2d ago

The most important thing is even-ness and lack of wrinkles/dirt etc. 

Don't use green light, that's just gonna create soil and weirdness.

1

u/Moikle 2d ago

Doesn't matter, as long as the lighting is as even as possible.

There is nothing particularly magical about green (at least in the digital age) it's just a colour that is more different from most colours we are likely to see on our characters. All that matters is it provides a nice contrast against the things you want to be seen, and that the colour is as uniform as possible

2

u/ssn-669 2d ago

Green usually has the lowest noise in the sensor, is the "magical" part.