This is a brief excerpt from F-Stop Academy
Bruce Logan ASC on Set recently in Australia
The basic reason to use greenscreen or bluescreen is to combine two different images on screen, shot at different times, and make them appear to be one.
Now very often we are just putting a person (like a newscaster) against a random image of something quite unrelated to the foreground. If that’s the case it doesn’t really matter what the background looks like or how you light the foreground as long as the greenscreen is exposed correctly (maybe a half stop under from key) making it possible to pull a good matte.
Most of the time I do greenscreen or bluescreen matting, I am trying to create the illusion that the foreground and background, when composited, are a single image shot in one location. This requires that the background and foreground have matching lighting.
What does this mean and how do we go about it?
We have to start with one image or the other. It is usually easiest control the lighting of the foreground, therefore we need to choose (or shoot) the background “Plate” before we shoot the foreground “FG.”
In shooting or choosing a Plate we should make …
By: Den
via planet5D pinterest news http://pins.planet5d.com/green-screen-101-from-bruce-logan-asc/
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