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Telyt-V 200mm marking.

david werbeloff
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david werbeloff

david werbeloff

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Hello, All,

 

I've been absent from the forum for a long time during which I seem to have found myself in the land of digital. I feel like a traitor to my Leica film cameras... Last year I bought a little Panasonic GX1 body and, with three adapters I can use all my Leitz lenses, admittedly with the 2x crop factor. I've been very happy with this arrangement. Since a 200mm in 35mm terms becomes a 400 on the GX1, I started looking for a Telyt-V 200, and landed a fine 1961 example last week, complete with OUBIO and B+W UV filter. As I was examining the lens I noticed a little engraving on the focus scale. A photo is attached. Any ideas what the "85" signifies?

 

As an addendum, this image was made with the GX1, Bellows II, and 90mm Elmarit lens head with 16471.

 

I look forward to your responses.

 

Best wishes,

David

 

P.S. My image didn't upload. Let's try this again...

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

Edited by david werbeloff
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david werbeloff

david werbeloff

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Hello, All,

 

Thank you for the usual erudite responses. I feel like a bit of a chump because I have subsequently looked at my 1960 Elmar f4, 1961 Telyt 400 f5 and 1961 Elmarit 90. The first two have the same numeral engraved at right angles on the focus scale as the 200mm. I've been looking at these lenses for years and never noticed that detail until now...:confused:

The Elmarit has the usual scratched numbers on the side of the optical unit and the last three digits of the serial number on the inside of the focus helical. Is one to understand that lens units in a particular focal length range were paired with barrels which were pre-engraved?

 

Thank you Luigi, for your explanation of the calculation factor represented by "85".

Thank you K-H, for your correction of "field of view".

Thank you, Michael, for your greeting.

 

Best wishes,

David

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luigi bertolotti

luigi bertolotti

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Based on this discussion http://www.l-camera-forum.com/leica-forum/customer-forum/169584-marking-summilux-50-a-2.html the actual focal length seems to be 198.5 mm, no?

 

.... or 208,5 ? :cool::confused: (a rather great tolerancing... but similar to the Summicrons 50 that are 52,2... ;))

Anyway, David, the Telyt 200 f4 has the lens unit unscrewable from the focus unit (for usage on devices like the Focorapid) , and the real focal length ought to be hand engraved onto the inner barrel.

Edited by luigi bertolotti
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Orient XI

Orient XI

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The pair of small numbers give the focal length to one tenth of a millimetre. The first of these gives the focal length to one millimetre. Thus, a nominal 200mm lens stamped "85" is actually a 198mm lens or more accurately a 198.5mm lens. Similarly a 50mm lens stamped "22" is actually a 52.2mm lens. Some 50mm lenses (e.g. f/3.5 Elmars) have a different code system where a single number is stamped on the back of the focussing tab.

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Orient XI

Orient XI

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Laney discusses the matching of lens mounts to lens heads of the second version of the f/2 50mm Summicron in both editions of his Leica Collector's Guide (the 2nd edition gives an erroneous cross-reference to the f/3.5 Elmar).

Three exact focal lengths of 51.6, 51.9, and 52.2mm were catered for; each should be matched to the mount. The codes stamped on the back of the focussing tab were 7 or 18 (16 Orient XI?) for 51.6mm, 8 or 19 for 51.9mm, and A for 52.2mm.

Laney cautioned buyers to check that the lens head was matched the mount with regard to these focal length groups.

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Michael Geschlecht

Michael Geschlecht

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Hello Everybody,

 

The engraving in tenths of a millimeter (ie: 15 = 1.5mm) of the actual focal length of that specific lens's optical unit on the outside of its individual focussing mount began sometime in 1960.

 

Some lenses from that year have the engraving some do not. There are some lenses that were produced over the years after 1960 that did not, or did not always, have the actual focal length engraved on the focussing mount.

 

This engraving of the actual focal length on the outside of the focussing mount has been done with both rangefinder & reflex lenses.

 

This engraving is generally for lenses that are 50mm long or longer.

 

Best Regards,

 

Michael

Edited by Michael Geschlecht
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luigi bertolotti

luigi bertolotti

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Anyway... I finally checked mine (1.888.491, Wetzlar) : "95" in the usual position , and the lenshead has a very clear "199,5" hand engraved on the barrel' side.

Welcome, dear visitor! As registered member you'd see an image here…

Simply register for free here – We are always happy to welcome new members!

 

Edited by luigi bertolotti
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k-hawinkler

k-hawinkler

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Anyway... I finally checked mine (1.888.491, Wetzlar) : "95" in the usual position , and the lenshead has a very clear "199,5" hand engraved on the barrel' side.

[ATTACH]448339[/ATTACH]

 

[ATTACH]448340[/ATTACH]

 

 

Many thanks Luigi.

 

I have two 200 mm f/4 TELYTs.

 

• LENS MADE IN CANADA..., 1851172, no marking. On lens barrel is scratched: 226 (upside down)

• LENS MADE IN GERMANY, 1972505, no marking. On lens barrel is scratched: 200 (upside up, like yours)

 

Go figure.

Edited by k-hawinkler
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