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#1
Posted to sci.electronics.repair,uk.d-i-y
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Bit of a Con Really - Follow-up ...
Andy Champ wrote:
The Natural Philosopher wrote: Color transparencies which are used in pro film applications say your are a liar. Not really. Transparencies subtract some colours from the transmitted light; prints subtract some from the reflected light. Displays make their own... And LCDs use a matrix of RGB filters over a backlight, which makes them behave similarly to a transparency in a projector, with the exception that you can tweak the RGB values to change the colour balance - which you *can't* do with film transparencies. -- W . | ,. w , "Some people are alive only because \|/ \|/ it is illegal to kill them." Perna condita delenda est ---^----^--------------------------------------------------------------- |
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#2
Posted to sci.electronics.repair,uk.d-i-y
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Bit of a Con Really - Follow-up ...
Bob Larter wrote:
Andy Champ wrote: The Natural Philosopher wrote: Color transparencies which are used in pro film applications say your are a liar. Not really. Transparencies subtract some colours from the transmitted light; prints subtract some from the reflected light. Displays make their own... And LCDs use a matrix of RGB filters over a backlight, which makes them behave similarly to a transparency in a projector, with the exception that you can tweak the RGB values to change the colour balance - which you *can't* do with film transparencies. Why do color enlargers come equipped with color filters then? |
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#3
Posted to sci.electronics.repair,uk.d-i-y
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Bit of a Con Really - Follow-up ...
The Natural Philosopher wrote:
Bob Larter wrote: Andy Champ wrote: The Natural Philosopher wrote: Color transparencies which are used in pro film applications say your are a liar. Not really. Transparencies subtract some colours from the transmitted light; prints subtract some from the reflected light. Displays make their own... And LCDs use a matrix of RGB filters over a backlight, which makes them behave similarly to a transparency in a projector, with the exception that you can tweak the RGB values to change the colour balance - which you *can't* do with film transparencies. Why do color enlargers come equipped with color filters then? You're completely missing the point. Once again, projected colour transparencies are nothing like printed images. -- W . | ,. w , "Some people are alive only because \|/ \|/ it is illegal to kill them." Perna condita delenda est ---^----^--------------------------------------------------------------- |
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