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From: "C.H.Ling" <chling@xxxxxxxxxxxxx>
 
 
----- Original Message -----
From: "John Prosper" <japrosper@xxxxxxxxxxx>
>
> There is a fourth reason why transparencies are preferred to color
> negatives: contrast.  In a properly executed print, the contrast ratio
> between the brightest and darkest areas of the image are supposedly at
most
> 100:1.  With transparencies, this contrast ratio soars to 400:1!  I have
> long heard transparency enthusiasts brag about the "bottomless" blacks
> achievable with their medium of choice but virtually impossible with
prints.
>   The latitude with transparencies is much tighter, but the derived
contrast
> is supposedly what makes it all worthwhile.
>
> John
>
Are you talking about transparency itself? I think the contrast ratio is
4000:1 not 400:1.
 
Yes, I am talking about the contrast of the transparency image itself.  I am 
reiterating results discussed in the now defunct Modern Photography mag, 
Popular Photography and several photo books.  These sources indicated that 
contrast in printed images, because it was a reflected medium, was limited 
to at most about 100:1.  Contrast in transparencies, because it is a 
translucent medium, could range as high as 400:1.  In fact, because computer 
monitors can be made to have contrast ratios of 300:1 or even 400:1, digital 
photography itself is said to be more faithful to transparencies over 
prints. 
John
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