For Leica lenses, here's the scoop on the names and what lenses they represent.
50/2 Summitar: 1939-53, Screw Mount (LTM) only, Collapsable only. Large
front element to reduce vignetting.
50/2 Summicron 1953-present, LTM and M-mount, Collapsable and Rigid
mounts. First Leitz lens to use high-refractive lanthanum glass elements
for superior color correction. Several version since then. Bellweather
lens for 50mm quality.
35/3.5 Summaron: 1949-58: LTM and M mounts
35/2.8 Summaron: 1958-6?: LTM and M mounts, used HR lanthanum glass,
superceded rapidly by 35/2 Summicron, rare lens, especially in LTM.
35/2 Summicron: 1958-Present: LTM and M mounts, used HR lanthanum glass, at
least 4 optical variations, including aspherical surfaces introduced in
1997 (I think).
So in general, Summicron is the best formulation. Leitz used to have
different names depending on the optical formula, but now they just use the
names to represent the aperture, so F/1.4 is Summilux, F/2 is Summicron,
F2.8 is Elmarit, etc. with slight variations like the short 90/2.8 and 90/4
were Tele-Elmarits.
Skip
At 1/17/00 07:37 PM -0500, you wrote:
Hi david
If I recall it correctly, Summicron is better than Summitar is better
than Summaron. So you did well.
Tom
On 30 Dec 99, at 22:08, david cochran spoke about
*Re: [OM] Tri-X..* saying
> Hi again:
>
> What a shame! It is not Summaron it is SUMMITAR. Well, what do
> you
> expect, I just have the camera for just 5 days....
>
> D.
>
>
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