P3D Re: Pan film

[Marvin Jones <Campfire@xxxxxxxxxxxxxx>]

Message text written by INTERNET:photo-3d@xxxxxxxxxxxxxxxxx
>RE: Someone said pan film not available to about 1929...maybe in 
quantity or retail, BUT panchromatic dyes discovered about 1910 by 
Fischer et al..an Lumiere Color with pan film and filter mosiac of 
dyed potato starch grains is from 1913 or so and reached movies  
and early National Geographic repros. BobH <

I think we're talking about apples and oranges here. "Panchromatic" film
has nothing to do with color reproduction. It's a black and white film that
faithfully reproduces the entire spectrum in shades of gray (as opposed to
"orthochromatic" film, which only saw the red end of the spectrum). Movie
film was orthochromatic up until the end of the '20s,


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