Leitz Summar 24mm "24,35 u42" lens thread size

[Einst_Stein]

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Anyone knows what thread size it is? or anything about it.

I got this "pancake" lens, both me and the seller thought it is M39 or M42 screw mount, but the mount is almost m39 but slightly larger. Not M42 either (much smaller).

I guess  "24,35" means 24mm f3.5, not sure what u42 means.

 

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[UliWer]

I think the interior part is a Micro-Summar macro lens. The exterior seems to be an adapter (?) which fits the 24, 35 and 42mm macro lenses. 

You could and still can use the Macro lenses with the M-bellows. I am not sure which adapter for the bellows will fit, bit I am rather sure, someone here will know. 

[UliWer]

Here you find another picture of the Micro-Summar, where it's said that it has a 40mm thread fitting the R-bellows with a special adapter. There should be one for the M-bellows as well.

[Einst_Stein]

https://www.coinimaging.com/summ24.html

Thanks, with your help I get some further infos.

In case you have problems the above link, here's a copy:

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Edited September 24, 2022 by Einst_Stein
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