Question on RB film backs.

Discussion in 'Medium Format' started by ed_farmer, May 16, 2017.

  1. When I recently broke out my RB gear to start doing some new B&W work, I discovered that I am missing a few dark slides. When I went to eBay to look, I discovered that whole backs are about the same price as slides!

    No problem, I bought a back for under $20. The slide is just fine but, although I barely care, the back isn't what was described. The only issue is that this is a 220 back and I really don't shoot any 220 film anymore.

    So . . . What happens if I put 120 film through the 220 back? Will the thickness of the paper backing be a problem mechanically? Will it be a focus issue?

    I think that I remember addressing this YEARS ago when I was using these cameras for wedding work but I don't remember the answer.

    Thanks . . .
  2. Google brings up discussions from other sites where people are doing this. The main concerns are film spacing (you may not get 10 images), and extra strain on the film advance mechanism, due to the thicker film+backing paper combination with 120 vs. no backing paper with 220.

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