Archived posting to the Leica Users Group, 2006/07/04
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]At 06:47 AM 7/4/06 -0700, Frank Filippone wrote: >I have seen an adapter listed for sale... It allows the use of Visoflex lenses in M39 mount onto a Hasselblad 200/2000 series >camera. > >Is there an adapter to allow the use of M lenses into M39 mount ( I realize infinity focusing will not work.) ( Hint.. probably a >macro part) This allows me to use my Visoflex bayonet mount lens to the Hasselblad body adapter. > >Has anyone ever tried to use a combination like this? Experiences, good or bad? >Do the 400mm + longer Visoflex lenses cover the 6x6 format without vignetting due to the barrel size? Frank A minor nit-pick: M39 is 39mm by 1mm and is a standard DIN thread. Leica Thread-Mount (LTM) is 39mm by 26 turns-per-inch Whitworth, a nifty 1/40mm difference which flummoxed FED before WWII and Canon immediately afterwards. Kilfitt made an adapter to fit their lenses to the Hasselblad 1600F/1000F. These adapters are relatively common and will also work on the Kiev 88 family. Much rarer is the later adapter to fit Kilfitt/Zoomar lenses to the 2000F/200 series of cameras. I honestly forget the modifications, but a bit of machining will allow the use of Viso lenses while preserving infinity focus. I once had such an adapter which I stupidly sold, as I then lacked a camera on which to use it. The easiest way to do this with a 2000/200 camera would be to purchase a Hasselblad body cap and then have either an LTM or M Bayonet mount glued into a hole made there for the purpose. Hasselblad also made a blank lens mounting plate but these cost a lot more than a body cap. I have a body cap into which Charlie Barringer inserted a Royal Microscope Society mounting ring so that I can do macro work with my 2000 FCM, a combination which works quite well. With the Visoflex lenses, there might be some back-focus issues -- the optical registration of the PLOOT/Visoflex I is 90.5mm and that of the later Visoflex II/IIa/III is 68mm, while the optical registration of a Hasselblad 2000/200 is 74.90mm. So, a later Visoflex lens (one with an M bayonet on it) should be able to work with infinity focus so long as a 6.9mm shim is added to the mix. Marc msmall@aya.yale.edu Cha robh b?s fir gun ghr?s fir!