A friend has a very nice RB 67 SD with a nice collection of lenses, at an attractive price. However, it appears that all three backs are 220 backs. I don't believe they are switchable between 220 and 120, are they? On my 645, the insert is one or the other.
He has only ever used 220 film, so doesn't remember. I tend toward B&W, so I would really want to shoot 120.
Anyone have first hand knowledge on this? Thanks!
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