There is a steady trickle of well-used but serviceable Hasselblad V-series camera components coming on the market at sometimes bargain prices (well, by Hasselblad standards, anyway). This is great if, like me, you like to use black & white film occasionally.
220 film backs are particularly good value compared with the 120 magazines. Of course, the trouble is that no B&W film maker produces 220-size rolls any more.
Many people don’t realise that it is possible to use 220 backs with 120 film; the film registers in the same film plane no matter what film you use and the difference in pressure from the pressure plate seems to have no practical effect on film flatness or transport. The frame spacing is different, each frame having more space between it and the next frame in the 220 back. It isn’t a huge difference but you can lose the 12th frame if you don’t compensate. Here’s how: when loading the film, stop when the arrow is as shown in the photo:
The 220 film magazine will wind beyond the 12th frame so with 120 film you will be exposing on the the protective paper – oops! You just need to watch the frame counter – when you have exposed the 12th frame, cock the camera to frame 13 then wind on the film fully using the winder on the film back.
Voila – there’s still life in those 220 film backs!