Some great shots here. I've got a 15mm on my Bessa plus a couple of others I'd like to try. Who sells a good (threaded) adaptor?
Cheers
Hi Michael,
As you can see from my signature I've got several Voigtlander Leica screw lenses and I've now gone slightly overboard perhaps with an adapter fitted to each one. I think I've bought from 4 different suppliers, one from Germany was the most expensive but others from Hong Kong have actually been heavier although significantly cheaper. They have all had three set screws to secure the inner threaded ring, so the one referred to by pdh would seem to be a superior product. I think the set screws are an 8BA thread and don't always allow a good secure purchase to be made. I've had one set screw where the thread in the adapter stripped, luckily I'm in a position where I was able to drill it out, re tap it as 6BA and insert an allen key set screw making it much more secure.
I've found it necessary to shim most lenses to get them to focus on infinity, funnily enough the 15mm is the only one that didn't require shimming. That was one reason for getting an adapter for each lens.
I started off by putting a shim behind the threaded ring in the adapter itself, usually needed somewhere between 2 thousands on an inch and 4 thousands of an inch, but on the last 2 I shimmed I took the threaded collar off the back of the lens and put the shim under there (there are sometimes shims already under there put in at manufacture). Had I started off doing that then I could have got away with just one adapter of course because each lens would have been adjusted rather than the adapter being adjusted for a particular lens. I might revisit those lenses that are unshimmed and shim them up and remove the shims for the various adapters, but there's no rush for that.
NB the last two I got were from Photodiox in the States and postage was expensive, the product was identical to those from Hong Kong where postage might be free, or certainly cheaper.
Barrie