Digital medium format has previously been the preserve of professional photographic businesses; commercial concerns that can justify investing tens of thousands of dollars on a tool that offers resolution and image quality beyond the capabilities of consumer cameras (or, at least, those that can recoup the rental cost). These cameras have tended to have 54 x 40mm (essentially the 645 film format) or 44 x 33mm sensors: considerably larger than used in most DSLRs. They were also often based on CCD chips, since these are easier to build on large scales and small volumes and cleaner at low ISO settings (though with limited dynamic range by modern standards).
As full frame cameras have become less expensive, this has put pressure on the medium format market (particularly the smaller variant) but has also seen CMOS technology filter upwards. This has led to us starting to see the first sub-$10,000 medium format cameras. The first that a dedicated hobbyist might consider, as well as wider professional market. So, as we keep being asked, which of these cameras is best?
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