Q about the "thingie" in the mount of a P6 Sonnar 180mm

http://cgi.ebay.de/Sonnar-2-8-180-Ca...cm dZViewItem

It has got me puzzled. In the mount you can see the rod that gets
pushed in so that the lens is wide open until you press the shutter.
But there is another thing as well with a slot in the middle that
changes position with the aperture. But it doesn't seem to link to
anything inside the Pentacon 6TL. It is the only other thing poking out
the back so should be easy enough to stop. What does it do?

wrote:

But there is another thing as well with a slot in the middle that
changes position with the aperture.

Pentacon made an adaptor to mount P6 lenses on the Praktica "electric"
35 mm cameras (VLC x, PLC x). The device you describe is used by this
adaptor to signal the aperture set at the lens to the camera's meter
circuit.

Ralf

--
Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany
private homepage: http://www.fotoralf.de
manual cameras and photo galleries - updated Jan. 10, 2005
Contarex - Kiev 60 - Horizon 202 - P6 mount lenses

Ralf R. Radermacher wrote:
wrote:

But there is another thing as well with a slot in the middle that
changes position with the aperture.

Pentacon made an adaptor to mount P6 lenses on the Praktica "electric"
35 mm cameras (VLC x, PLC x). The device you describe is used by this
adaptor to signal the aperture set at the lens to the camera's meter
circuit.

Ralf

Thanks a lot for that info. Much appreciated.

Roland



--
Ralf R. Radermacher - DL9KCG - Köln/Cologne, Germany
private homepage: http://www.fotoralf.de
manual cameras and photo galleries - updated Jan. 10, 2005
Contarex - Kiev 60 - Horizon 202 - P6 mount lenses