Green screen was created to give the illusion that someone is in a setting that they are actually not in. It allows people filming to be more creative and extravagant when it comes to deciding on locations to film. Personally i think that green screen is useful for capturing short filler shots; but i would never film the majority of narrative or performance elements using green screen, as i have always been able to notice where green screen has been used in past occasions, and i feel it limits the creativity one can have with camera angles, as distance from the green screen will always be a considerable factor.
In order to create the green screen effect using Final Cut you import the previously recorded video footage with the green screen as the background. You then have to select the small video effects bar at the top left hand corner of the tab and select keys; from here we selected keys and went down to chroma keyer, and select colour smoothing 4:1:1 before dragging this into our video file. You are then presented with a series of colours that you can remove from your frame using this program. We selected all tangents of green and clicked the frame until the majority of green is removed from the frame, and the imported picture shows where the green once was. This will be more successful if the picture selected is of high resolution and large size.
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