after a little bit of preparation of some photos now the story also in English.
The idea came up when a discussion came up in the digicamclub about adapting the various M39-Paxette-lenses via the VNEX-adaption-system to NEX-bodies. It was posted, that the distance between film and mount of the paxette is 44mm, the same as the EOS-system has.
On the market there are various Leica-thread-mount adapters to EOS, which allow macro use only due to the very much shorter flange distance of the Leica compared with the EOS-bayonett. But the idea came up to modify such an adapter mechanically to make it possible to screw in a Paxette lens and get it on the right position for achieving infinity-position correctly. That would mean bringing it to the exakt parallel point of the EOS-bayonett-mount of the camera body.
The lenses of the paxette are pretty small - after some experiments we found adapters to use them as basis material for the modification which are stable enouht to accept the reduction of brass in the critical mount-level withour breaking up and fitting the widest possible range of paxette-lenses we could find to get their mechanical dimensions. With the now found solution all know Paxette-lenses can be mounted to a EOS-body.
But there are restrictions.
Those lenses with a very short construction on the cameras side can be used with EF and
EF-S mount = fitting full format bodies. Example is the Schneider Xenar 1:2,8/50mm, (tested with s/n 4220026
) and the Staeble Telexon -E- 1:5,6/85mm (tested with s/n 527602
The midrange of constructions, as the Roeschlein Telenar -E- 1:5,6/135mm and the Roeschlein Telenar -E- 1:3,8/90mm can be used with EF-S bodies, due to mechanical components colliding with the mirror of FV-bodies. (testes with Roeschlein Telenar -E- 135mm s/n 188201
and Telenar -E- 90mm 119302
Some short lenses, possibly older ones, have an additional tubus on the back side, potencially for an intendet coupled d-meter, which never came in the camera, those lenses are only for macro use with the bellows, e.g. the Staeble-Choro -R- 1:3,5/38mm (tested with s/n 384419
) and the Steinheil Cassarit 1:2,8/45mm (s/n 1033635
). I tell you the serial numbers to refer to this explicite lenses, it may be that there are versions of them with different structures, at this moment i don't know any - but I'm not God.
The image above shows the different structures on the body-side of the lenses.
Right row downwards: Steinheil 45mm - Staeble-Choro 38mm - Schneider 50mm
Left row downwards: Roeschlein 135mm in adapter-prototype - Roeschlein 90mm - Staeble 85mm
Here my EOS 400D with three adapted lenses in the new adapters, one adapter on the camera withour lens.
Impressive, how small these lenses are compared to the known dimensions of our today-equipment.
The Roeschlein 90mm is the lens with the best performance in my set - but it needs some additional time and things like lens hoods to test them all correctly.
Right click on the image-symbols -> opens them in a separate window.