Blue and Green Screens / Photo Credit: Gaming Careers
WHAT'S THE DIFFERENCE BETWEEN
BLUE AND GREEN SCREEN? (In the Entertainment industry.)
WHAT'S THE DIFFERENCE BETWEEN BLUE AND GREEN SCREEN?
Generally, the only difference between using a green
screen as a background and using a blue screen as a background is the color
itself—but more filmmakers are moving from blue to green for other specific
reasons: The use of digital cameras. ... Using green instead of blue results in
less noise when keying out the footage.
When it comes
to green screens and blue screens, both backgrounds are used for the same
purpose: to use Chroma Key technology in order to place subjects in front of a
projected background. During this process, editors are able to film people and
objects in front of a static background, remove the color of the background
from the images, and replace it with a new background. The colors green and
blue are not present in human skin tones which makes them ideal for the Chroma
Key process as opposed to the color red. Generally, the only difference between
using a green screen as a background and using a blue screen as a background is
the color itself—but more filmmakers are moving from blue to green for other
specific reasons:
The use of digital cameras. When using a digital
camera instead of film, you obtain better results from a green screen shoot
because of the cleanness and luminescence of green over blue. Using green
instead of blue results in less noise when keying out the footage.
Color spill. While the green or blue screens will be
removed during editing, some color will “spill” onto the subjects, especially
around the edges. This can create a thin line around the person, or make areas
like their hairline look odd. Depending on your shoot, color spill can be
better or worse depending on the color of your screen. Blue screen tends to
have less spill than green, and also happens to be easier to color correct than
green.
The prevalence of blue. Subjects and objects are more
likely to be blue than green. For example, people are more likely to be wearing
blue clothing than green clothing. You get better results when the background
color is not heavily present in the subject you are filming (which is why red
screens and yellow screens don’t exist).
Blue was originally used for TV chroma keying special
effects because human skin tone contains very little blue, and because the film
industry used blue backgrounds for similar purposes. The color blue was tied to
the blue emulsion layer of film having comparable grain and detail in
comparison to the red and green layers of the emulsion. In television and
digital filmmaking, however, green has become the favored color because of some
practical considerations, and because lousy compression algorithms used in both
analog and digital TV distribution retain more detail in the green channel. The
choice of color is up to the effects artists and the needs of the specific
shot. Whereas the blue screen was introduced to the television industry by the
film industry, the use of green screen visual effects has been introduced to
the film industry as electronic imaging has augmented and replaced the use of
chemical film stock in cinema. Also, the green background is favored over blue
for outdoor filming where the blue sky might appear in the frame and could
accidentally be replaced in the process. Although green and blue are the most
common in part because red, green and blue components are used to encode the
visible light spectrum, any key color can be used. Red is avoided for human
subjects due to its prevalence in white skin tones, but can be often used for objects
and scenes which do not involve people.
Lighting. Blue screens have a lower luminosity as compared
to green screens. This means they are better suited to low-light shoots, but
also makes them trickier to light. If you want the blue screen to key properly
with the least amount of adjustments necessary you'll need to set your camera
to a higher f-stop than you would were you using a green screen. This also
means it is more difficult to shoot a large scene on blue screen as opposed to
green.
Sources, References & Credits: Google, Wikipedia, Wikihow, WikiBooks,
Pinterest, IMDB, Linked In, Indie Wire, Film Making Stuff, Hiive, Film Daily, New
York Film Academy, The Balance, Careers Hub, The Numbers, Film Maker, TV Guide
Magazine, Blurb, Media Match, Quora, Creative Skill Set, Chron, Investopedia,
Variety, No Film School, How Stuff Works, WGA, BBC, Daily Variety, The Film
Agency, Best Sample Resume, How Stuff Works, Bright Hub, Career Trend,
Producer's Code of Credits, Truity, Production Hub, Producers Guild of America,
Film Connection, Variety, Wolf Crow, Get In Media, Production Beast, Sony
Pictures, Warner Bros, UCAS, Frankenbite, Realty 101, Liberty Me, Careers Hub, Sokanu,
Raindance, Film Connection, My Job Search, Prospects, David Mullich, Gear
Shift, Video University, Oxford Dictionaries’, Boredom Therapy, The Bold
Italic, Nicholas Persac, The Guardian, Jones on art, Allison Meier,
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Blue and Green Screens / Photo Credit: Gaming Careers
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