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A green screen is a green background that is used to change the background into anything while editing it

It is used a lot in movies to change the background for different scenes without having to spend a lot of money actually creating it

It is used in photography to change the background into a nicer scenery

They are used on weather reports when there is a green screen behind the reporter to change the screen to the weather it is for that day

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First thing you would need to do is to buy a green screen in the color called chroma green which is the color used for green screens to work

Set the green screen in the background of the scene and take the video or picture

After taking a picture or recording a video while using the green screen in the background, when editing use the chroma keying tool in your editing software to remove the green entirely from the background and allow you to insert a different background of your choice

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Green screens use visual communication to make the viewer interpret the scenery to be in another place by changing the background with the green screen

This type of visual communication can be helpful in weather reports to make the viewer understand what is happening more clearly

It can also help with setting the tone in movies and help put the viewer in their perspective

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Avengers: Endgame (2019) - Making the Final Battle!