I posted this question on a Leica forum today and got a reply almost instantly, that I would like to share with you:
Welcome to the Forum. You have a 2nd optical version, 1st mechanical version lens. A preferred combination. In 1962 some, but not all, lenses had begun to have their actual focal lengths engraved on the lens barrel. Many stated focal lengths of many lenses of many manufacturers (not just Leitz/Leica) are approximate. Engraving began @ Leitz around 1960 but was not universal until somewhat later. Lenses shorter than 50mm do not have their actual focal lengths engraved. The system of engraving was to write the LAST digit (ie: the "0" of "50") + the 1/10th of a millimeter of the ACTUAL focal length w/o the decimal .
50.0 = 00
51.3 = 13
49.7 = 97
Enjoy your lens.
Best Regards, Michael"
Help: identifying my Leica-M 50 Summilux lens (Silver, 1962) and what to do with it??
Well, there you go. :-).
Originally Posted by TheToadMen
Still thinking of trying the NEX-6 with adapters?
And the wonderful part is that if you get bored with a rangefinder you can just use the film in any other 35mm body you like the look of!
Originally Posted by LiamG
Wait a tick......you mean I can empty my freezer of all the film I have stored up and have enough money to get a Leica M-Monochrome??? Wow....now you got me thinking..... :-)
Everyone who sells a Summicron or Summilux regrets it sooner or later.... There is something about wide aperture Leitz lenses that appeals to the soul. If left to mature, this disease spreads to Summitars and Xenons and the next thing you know you are craving Thambars. Then large format hits and you want Cookes and Petzvals. I have seen this syndrome in my medical practice and there is no cure, but there is GAS therapy
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Oh and keep the 90 too.
Couple days ago a great heron (I think, I'm not a birder so don't know) landed on a tree in my backyard. I don't use the 90 very often but needed it then and there.