Originally posted by Anvh Then it's better to go 645, those lenses are even smaller, lighter, cheaper and even have better resolving power... maybe they need to make a digital 67, that's even better.
There's no 645 digital camera yet, much less 67, of course. I'd love to purchase one - and I imagine in a decade or so I will - but right now the initial investment for the camera is too much for me to justify.
Diminishing returns coupled with economies of scale make a 56x42mm sensor untenable for most of the market currently considering 36x24, which itself is a small subset of those who would justify the cost of 24x16mm.