[rollei_list] Re: Capa's Cameras
- From: Marc James Small <marcsmall@xxxxxxxxxxx>
- To: rollei_list@xxxxxxxxxxxxx
- Date: Fri, 25 Sep 2009 22:37:10 -0400
At 05:49 PM 9/25/2009, Mark Rabiner wrote:
>I heard that "sharpness" which is to me as well vague but that doesn't stop
>everyone from thinking in those terms turned out to NOT be resolution.
>Perhaps acutance. The Nikkor's did NOT resolve more line pairs But they had
>more contrast. The Nikkor's may have and more contrast (snap!?) and that
>comes across as sharpness when hold up the negs and look at them as the
>bullets fly by in that last batch and then perhaps even run off some contact
>sheets.
Except that is not true. These lenses were
tested by several optical labs in the US and by
several photo magazines, all in 1951, and no
distinctions in performance could be
found. Again, the Japanese redesigned their
lenses shortly afterwards, and the mid-1950's
lenses were improvements but, then, by then Zeiss
and Leitz had also reworked their offerings.
But, in 1950, the Japanese lenses were precise
copies of the German originals and were made from
German optical glasses. A copy cannot exceed the
performance of the original, by definition.
Marc
msmall@xxxxxxxxxxxx
Cha robh bàs fir gun ghràs fir!
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