I’m Back, the company behind the popular Digital Back for old 35mm SLRs, is… well… back. And this time they’re funding an affordable digital back that seeks to breathe new life into old medium format cameras from Hasselblad, Bronica, Pentax, Mamiya and more. The Idea Slapping a digital back onto older medium format bodies isn’t a new idea. Hasselblad released its CFV-50c back for V-System cameras back in 2014, and it just updated it last month, releasing a version 2…