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orthochromatic

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orthochromatic /or·tho·chro·mat·ic/ (-kro-mat´ik) staining normally.
or·tho·chro·mat·ic (ôrth-kr-mtk)
adj.
Staining with the same color as that of the dye used. Used of a cell or tissue.
orthochromatic
[or′thō·krō·mat′ik]
denoting a photographic emulsion sensitive to all colors except red.
orthochromatic [or″tho-kro-mat´ik]
staining normally.
orthochromatic
staining normally.
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Holm was pointing out the differences in shading between orthochromatic and panchromatic film, but I think the corollary is "old photos may be staged so they could fib a little too".
Lakota Women by Whispering Wind
10) Martha Rosler points out that many early landscape photographs were double-exposed or double-printed to render clouds in the sky because the orthochromatic emulsions of the era were incapable of achieving results where clouds and landscape were both correctly exposed at once.
Photographs: whence veracity? by Shapter, Michael / Afterimage
This is referred to as panchromatic film and is used today for all except special applications where orthochromatic film has advantages.
A bit of history--film--back then by Patti, Tony / PSA Journal
 
 
 
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