Leicaflex I or 2 cams

[Steve M.]

It's been years since I owned a Leicaflex, but see an opportunity to get one w/ a lens for cheap. The lens is a 1 cam 50 Summicron, and the body is a Leicaflex SL. Am I right in assuming that since the 1 cam lenses were designed for the Leicaflex Standard, which didn't have TTL metering, this 1 cam lens on an SL will be stop down metering? Thanks.

 

[Joop van Heijgen]

It's been years since I owned a Leicaflex, but see an opportunity to get one w/ a lens for cheap. The lens is a 1 cam 50 Summicron, and the body is a Leicaflex SL. Am I right in assuming that since the 1 cam lenses were designed for the Leicaflex Standard, which didn't have TTL metering, this 1 cam lens on an SL will be stop down metering? Thanks.

That's correct. With open lens it is no problem, it wil remains metering. Specially usable in dark situations.
When you want use the aperture presetting ring it will don't work...

Leicaflex designer Theo Kisselbach says in the Leicaflexbook (1972) about it:

"In the exceptional case of having to use a lens with only one cam, you can take your exposure reading at the working aperture: at the same time you have to press the depth-of-field button. Because the new measuring starts from a limit stop, which is not incorporated in these lenses, a small deviation will occur. You can compensate this by rating the film speed slower by 2 DIN
(deduct 1/3 from the ASA rating)."