Here we go again. People inferring that it was good enough for Ansel, it's good enough for us. But have you ever seen those particular images enlarged more than 3X ? The aspen shot seems to hold up; but the others lose definition.
Here we go again. People inferring that it was good enough for Ansel, it's good enough for us. But have you ever seen those particular images enlarged more than 3X ? The aspen shot seems to hold up; but the others lose definition.
From Wikipedia:
“The first true zoom lens, which retained near-sharp focus while the effective focal length of the lens assembly was changed, was patented in 1902 by Clile C. Allen (U.S. Patent 696,788). An early use of the zoom lens in cinema can be seen in the opening shot of the movie "It" starring Clara Bow, from 1927.”
Here we distinguish "zoom lenses" from "true (parfocal) zoom lenses". IMHO the concept is fuzzy. Perhaps "true zoom" is more related to cinematography, but "zoom" is a more generic term in still photography, I'd say.
I fact the same wiki article you cite soon starts naming zooms to any variable focal length lens...
Anyway today parfocal design is obsolete in DSLRs, as varifocal is technically better and the electronics mantains focus while zooming with varifocal lenses (as the case of Nikon 70-200 f/2.8), having great advantages (weight, size, cost).
Drew, do you think that were AA lenses performing under 25 lp/mm ? Not at all!
If one can obtain 50 lp/mm in 4x5 (IMHO a difficult challenge for most situations) this would be worse IQ than 8x10 at 25 lp/mm, mainly because film is degradating IQ at 50lp/mm in common low micro contrast.
If having 25 lp/mm an x5 enlargement still would show 5 lp/mm on paper, so no flaw would be seen with the viewer's nose on a 1,2m print.
What I say is if not all AA photographs were completely sharp it could be because other reasons, like DOF, focusing, wind or enlargement.
I wish I had. But my background in photo sales started in a very well equipped regional retailer in 1957 and ended as a well known USA importer and distributor that heavily specialized in European and, especially, German photo products. Along the way I also worked for the 8mporter and distributor of Sinar and Nikon at the time that Nikon introduced their LF lenses. So I represented Nikon, Rodenstock and Schneider lenses during that time.
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