Here are the top tips for using a Green Screen.
In this post we'll cover:
Adjust the camera correctly
Normally you will film at 50 or 60 frames per second, with a Green Screen a frame rate of 100 frames per second is recommended. This prevents motion blur and motion blur.
Raise the ISO without getting noise in the image and reduce the aperture to prevent motion blur and motion blur.
No imperfections in the background
Choose a material that does not attract lint, folds or wrinkles. You can choose paper or thin cardboard, fabric often works easier as long as it does not wrinkle.
Do not use shiny and reflective materials. As for reflection; be careful with glasses, watches and jewelry in the subjects.
Keep enough space
Try to keep the subject far away from the Green Screen. On the one hand, small imperfections and folds disappear, on the other hand you have less chance of color spill on the subject.
Expose the subject and the Green Screen separately. Make sure there are no shadows on the Green Screen, and a backlight on the subject can outline the contours nicely.
Don’t forget to match the exposure of the subject to the exposure of the new background, otherwise you will never be able to make a convincing key.
To make lighting a little easier, there are special Apps to help you, such as The Green Screener (iOS & Android) and Cine Meter (iOS).
Watch the picture
Don’t use too many fast movements. In addition to image blur, it also becomes complicated to place a background that follows the movement. If possible, film in RAW format so that you don’t have any compression problems.
Also make sure that the subject in the foreground does not move beyond the surface of the Green Screen. The distance reduces the range of the screen.
Placing the camera at a greater distance and zooming in can help.
Don’t make it difficult for yourself!
Ultimately, the KISS method is the most effective; Keep It Simple Stupid!