Planapo wrote:
Charlie, Enrico,
Did your solid version come with M42 mounts or was it fitted with the Exakta bayonet mounts? I ask since the black solid one I have has such bayonet mounts and I wonder, if they could be changed against M42 mounts salvaged from one of my lightweight versions, especially as Enrico wrote:
(the mounts of mine will have to go, so not a big loss).
--Betty
Mine has the Exakta bayonet, albeit not for long
. The four screws at the front of the lens mount hold this mount in place, but also keep the pleated cloth attached at the rear of the standard. You should remove the four slotted nuts accessible from inside the bellows (through the opening of the rear mount) first, before taking out the screws and lens mount.
The pleated cloth at the rear is also attached with four screws, but accessible only from inside the bellows. This reveals some kind of friction flange that I have not figured out yet. It actually appears that also my bellows originally had a rotating rear mount, but hopelessly blocked by some hard brown gunk (Canada balsam? epoxy?).
This leaves 40 mm holes in both standards, which are too narrow for recessed M42 lens mounts. Filing a wider opening gets the edge of the opening uncomfortably close to the screw holes. You will have to modify a short M42 extension ring to make a lens mount (or if you can turn your own on a lathe, anything can be done). I am planning to cut an old Nikon F extension ring in its middle to make both mounts.