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75mm 3.5 Opton Tessar

anthonym3 3 6
18 Jul 2021 2:20PM
Is there any difference between a 75mm 3.5 OPTON TESSAR on a ROLLEIFLEX vs IKOFLEX?
thewilliam2 5 1.6k United Kingdom
19 Jul 2021 1:00PM
You might find this interesting:-

This author suggests that many of the early West German lenses marked "Zeiss Opton" were of poor mechanical quality.
anthonym3 3 6
19 Jul 2021 2:29PM
The author refers to CONTAX lenses. The current subject is IKOFLEX lenses which do not have focusing rings. All of my research suggests that lenses such as 75mm 3.5 OPTON TESSAR are of excellent build and optical quality.
thewilliam2 5 1.6k United Kingdom
19 Jul 2021 3:49PM
The author was complaining about Zeiss Opton products and, in particular, their poor mechanical build quality. All lenses have both optical and mechanical components even if they don't have a focusing ring.
anthonym3 3 6
20 Jul 2021 1:20AM
Further research has revealed that OPTON are better build quality due to JENA having been made from aluminum rather than plated brass. I rest my case.
pentaxpete 17 732 1 United Kingdom
26 Jul 2021 5:50PM
I bought an IKOFLEX with the 75mm f3.5 'opton-Tessar' in Germany New for equivalent of £15 when i was in Iserlohn in British Army 1957-58. It was OK at first -- on Demob in 1958 suddenly sharpness went haywire -- I as told the Opton -Tessar was 'Mounted in pItch' which softened in Heat and lens 'sunk' into mount upsetting the definition -- wish I had bout a ROLLEIFLEX NEW for DM 820 when British Money was 11.50 DM to one pound Sterling -- do the Maths --
PS -- Brand NEW LEICA 111F with 50mm f3.5 Elmar were £45 in Canadian Maple Leaf Store --
anthonym3 3 6
27 Jul 2021 2:04AM
I once was very lucky to have bought a LEICA 3F red dial with a 50mm 1.5 SUMMARIT at a yard sale in ALBANY, N.Y. in 1996. I asked the lady how much she wanted, she replied $25.00. I wound the film advance and the shutter was very slow which I pointed out. She then said "OH WELL THEN GIVE ME $15.00". Once in a lifetime!

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