The swivel mount won't work, but it is not needed with the 45 deg prism. On the 90 deg prism, I just push the buttons and lift the rear of the prism (the eyepiece part) a little and the back is easily removed. I have not found this to be a problem. And yes, I can still do the machining for whatever I said back then. I would need the Hasselblad prism that you want adapted plus a Rollei prism. It's best to find a crappy Rollei prism since it will be trashed. The Hasselblad prism is not hurt, it can be converted back to Hasselblad use with nothing but a small screwdriver. Jim Jim Brick Sunnyvale, CA http://www.photomojo.org On Oct 2, 2012, at 8:37 PM, Uwe Wolfgang Steinke wrote: > Hi Jim:) > I found your post on the apug forum from 2006 - do you still offer this > milling job? Could the focusing diopter help to leave the swivel mount on? > > Uwe > > 2012/10/3 Uwe Wolfgang Steinke <paintingwithlenses@xxxxxxxxx> > Great to see that it works with a 90° prism:) How do you adapt them? I'd sell > all my Rollei and Kiev prisms with and without metering to get a pair of the > nice Ha$$elblad prisms working on my SL66! > The only thing I'd miss is the possibility to twist the prism to be able to > change the back quicker - or is it possible to adapt that, too? > > Uwe >