Why did the blue screen become the green screen?!


Question: The blue screen never "became" the green screen, but as the other guy mentioned, it is used mostly when scenes are filmed using digital cameras. To put it simply, the color information recorded by a digital camera is different than a film camera, so green background work better for keying. On the other hand, anyone using a traditional film camera should use a blue screen because of the way the color information is interpreted. Basically, if you're shooting digitally then green screens get you the best results, whereas if you're shooting on film then blue screens work better. Just watch any sort of behind-the-scenes look at how a movie's visual effects are created and you'll most likely see the actors in front of a blue screen.


Answers: The blue screen never "became" the green screen, but as the other guy mentioned, it is used mostly when scenes are filmed using digital cameras. To put it simply, the color information recorded by a digital camera is different than a film camera, so green background work better for keying. On the other hand, anyone using a traditional film camera should use a blue screen because of the way the color information is interpreted. Basically, if you're shooting digitally then green screens get you the best results, whereas if you're shooting on film then blue screens work better. Just watch any sort of behind-the-scenes look at how a movie's visual effects are created and you'll most likely see the actors in front of a blue screen.
their two different things.

Blue Screens (if i have the two in the right order) is for back grounds. Like superman flying around the city. well you dont have a man really flying, so you put him in front of a blue screen on which the city is shown.

Green screens are for effects.

Forest Gump is a great example of Green Screen work.

Remember when Lt Dan was on Gumps boat and you see him swing his half legs over the railing and then jump off?

Well the movie made it look like he did that with half legs.

What you dont see are a pair of blue sock things (not sure what their called) covering half of his legs, and that the railing actually had a hole in it. The green screen aloud the changes.
Blue is generally used for both weather maps and special effects because it is complementary to human skin tone. However, in many instances, green has become the favored color because digital cameras retain more detail in the green channel and it requires less light than blue. Although green and blue are the most common, any color can be used. Occasionally, a magenta background is used.

With better imaging and hardware, many companies are avoiding the confusion often experienced by weather presenters, who must otherwise watch themselves on a monitor to see the image shown behind them, by lightly projecting a copy of the background image onto the blue/green screen. This allows the presenter to accurately point and look at the map without referring to monitors.


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