-- card: 55484 from stack: in
-- bmap block id: 35975
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-- background id: 2792
-- name: glossary 8
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on closecard
  global maploc, cardloc
  put word 1 of the short name of this card into maploc
  put word 2 of the short name of this card into cardloc
end closecard



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Macintosh Display Card 4•8 and 8•24

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Glossary

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True Grays

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glossary8

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While the human eye is capable of discerning over 7 million colors, it is only capable of interpreting a fraction of that number of gray tones.

Given that gray is a variation of black and white mixtures, and that it is possible to display 16 different saturations of gray, then a computer which is capable of displaying 16 different lightnesses of each saturation of gray is capable of 256-level grayscale display.   This lets a computer display “black & white” images with more of the appearance of a b&w photograph than what we traditionally think of as a computer display.  

This is about the most grays the eye can perceive.