70mm rb back, what do you do with it?

[avandesande]

does anyone use these things? how much film does it hold? How do you develop it?

 

[Tom Hoskinson]

I have a 70mm Hassleblad back and a couple long rolls of 70mm Kodak Tech Pan. I found a Kindermann 70mm SS reel and I now develop the film with that.

Before I found the Kindermann 70mm reel, I hacked a couple 70mm reels out of some plastic 120 roll film reel components. The hacked reels worked ok for processing short lengths of 70mm film.

I recently acquired a 70mm rb back - intending to fit it to the 2.25x3.25 Graflock on my Century Graphic.

 

[Nick Zentena]

Wouldn't it be better to get a Graflex back for the Graphic? That way you can avoid the perforated film issue.

The mamiya needs perforated film. It's just not that common today. OTOH you can get non-perforated from J&C. Should be about 50 frames of 6x7.

 

[Tom Hoskinson]

I already use Mamiya RB rollfilm backs on my 2.25x3.25 Crown Graphic. I strongly prefer them over the Graflex backs.

Also, I want to shoot some of the J&C 70mm unperforated film - cant do that in my Hassy 70 mm back.

 

[Nick Zentena]

But doesn't the Mamiya 70mm back only take perforated film?

 

[Tom Hoskinson]

Whoops!