Hello,
I made my own mount by using a Sinar lens board and taking the mount off a old Nikon extension tube and gluing it on to the lens board with Araldite.
It works perfectly.
Cheers
Simon
Same here, only with a Toyo lensboard and Mamiya 645 mount. And I didn't even need to cut or glue anything.
[attachment=23405:DSC00868...pc_cropR.jpg] (Apologies for the crappy mobile phone pic)
Here's my DIY recipe: M645 camera (was with film, now with MFDB) -> M645 to Kiev60/P6 adapter -> Kiev60 reversing ring (62mm thread) -> Toyo Lensboard with Copal 3 hole -> 62mm to 77mm filter step down ring.
The reversing ring ($10) slips through the 65mm Copal 3 hole in the lensboard ($30 used), and is locked on the other side by the step down ring ($5) - tightened hard (and perhaps glued/epoxied if you want extra security). This therefore gives me a lensboard with a P6/Kiev60 bayonet such as you'd find at the back of any P6/Kiev60 lens.
You can then attach any of the following MF cameras, with the appropriate P6 adapter ($20): Mamiya 645, Contax 645, Pentax 645. Mamiya in my case. It is rather nice to get electronic focus confirmation and TTL AE with a large format monorail
The only thing I had to specifically buy to complete this project was the $5 step down ring. I already had all the other bits (which tells you that yes, I did dabble quite heavily in P6/Kiev stuff once upon a time ).
I've seen M645 reversing rings on ebay and they might even allow for a thinner all-in-one adapter than having the two P6 pieces. The 58mm version should work; the 67mm version would require a larger hole than Copal 3. Just be careful with clearance. My arrangement gives me a few mm to spare between the lensboard and either the PD prism on my old M645s, or the grip on my 645AFD. Any closer and the AFD's shutter button would be awkward to reach.
There's also nothing unique about it being a Toyo lensboard. It could be Sinar, Linhof, Horseman - anything as long as it has a Copal 3 hole. And it's trivially easy to make.
I therefore call it
"Ray's Any-LF to Any-645 EZ Adapter" (TM, all rights reserved, shoplifters will be prosecuted, prices may go down as well as up, coffee may be very hot)
Of course as CB says, you are limited in terms of focal lengths with a rig like this. Tabletop closeups, macro etc. are of course no problem with shorter lenses. But the M645 is 63mm from focal plane to flange, the adapters to the rear lensboard bring that up to around 80mm, and rear lensboard to front lensboard is about 50-55mm with a bag bellows squashed up tight. So around 135mm in total. On a flat lensboard, LF-type lenses of 150mm and above will reach infinity, and my 135/3.5 Xenotar just falls short but it can do portrait distances - I plan to upgrade to a recessed Copal 1 board so that it can also reach infinity. A recessed board would knock (39.5mm) off the flange distance, reducing it to ~95mm - which would make RB67 and possibly RZ67 lenses (112mm & 105mm registration respectively) usable at infinity - now that would be exciting! There is of course the M645 50/4 shift lens, but if I rigged an RB/RZ lensboard I could have a 50/4.5 shift
-tilt lens. Previous attempts or suggestions I've seen at getting RB/RZ lenses to work on a LF-style camera with film backs or MF digital have all hit trouble at the hurdle of "how do you cock the lens shutter?". So it has to be done with a focal plane shuttered camera, and in MF digital that means something like my AFD.
