green screen effect merrissa

A green screen is a background that wont be able to find out in real life and also you can do things that are impossible in real life
to use green screen you need to have green background and computer to edit the shots there were taken in green screen
movies that have green screen
titanic
men of steel
star wars

http://oneperfectshotdb.com/wp-content/uploads/2015/07/man-of-steel.png

http://cinefex.com/blog/wp-content/uploads/2014/05/Avengers-Greenscreen-Composite.jpg