Stupid question about how to use a Hasselblad A12, after all these years...

[Philippe-Georges]

I finally found a Graflok 23 adaptor for Hasselblad V12 roll film back, so I can mount a A12 on my 6x9 Silvestri, which is some kind of a plain, slightly recessed, plate with the necessarily coupling hooks, nothing wrong with that.
But, there is something I always wondered about: how to transport the film from one to an other frame without a Hasselblad body?
Ofcourse I know about the little crank on the back's side, which is used to wind the film when loading and unloading.
And I have tried that crank to transport the film but the spacing wasn't right: either to wide or to narrow, even overlapping, or ending with (only-) 11 frames.

I actually never really bothered as the need never arose, and the Flexbody is equipped for that.
Anyway, there must be a possibility as there are so many different A12-to-X adaptors...

I searched on the web but couldn't find an adequate answer, nor in Ernest Wildi's Hasselblad book.

 

[bdial]

It’s not the answer you are looking for, but you could use a manual back and rely on the backing paper numbers.
For an A back, I don’t know, maybe make a chart of how many winder revolutions are needed for each frame?

 

[GarageBoy]

Did you slide the film under the clamp? You gotta turn the key back to the close position, thread the film under, then turn the key back to the open position. Not saying it's your problem, but it's a common A12 mistake

 

[OAPOli]

The first issue is that the counter has an automatic stop at frame #1, which is usually disabled by advancing with the camera body.

I don't know if that is the correct solution for your situation but you can get inside the back and remove/attach the little hook that locks the advance. From there you can manually advance the frames but you have to eyeball the frame counter, which is not accurate.

 

[RezaLoghme]

Also its very easy to put the film into its bracket the wrong way. With Ilford, any lettering must be upside down, otherwise you are going to try to expose the backing paper.

 

[BrianShaw]

Getting back on topic, may I ask who makes this adapter? Perhaps the maker has a scheme. I can only imagine that winding without an old back that shows backing paper numbers would be quite challenging, if it can be done at all in a practical manner.

 

[Philippe-Georges]

Alvandi, and no he hasn't any system for advancing the film with an A12.

 

[BrianShaw]

Ahhh… as I was guessing. No instructions or usage guidance either. Good idea but seems to lack practical implementation.

 

[cowanw]

Take picture, insert and remove slide throughout process as required, remove and remount on Hasselblad, wind, remove and mount on adaptor.
Repeat