Originally posted by barondla Pentax must go full frame with the 645 system.
My Pentaxian buddy and I have had this discussion many times. I suggested that If Pentax were to create a digital 6x7, they would own the medium format market. That was some 4-5 years ago. 645Z was hot at the time and the only "reasonably" priced medium format camera in the market. It could still happen. However, you need a sensor for that beast. Who is going to make the sensor for it, Sony, Toshiba, Samsung, Canon (not likely). More importantly, who is going to buy it and how many units can Pentax sell. For something like that to be successful, they have to sell a few thousand units. Let's not forget the need for new lenses too. The cost of R&D would be prohibitive.
I have watched Fuji slowly take over the medium format market. At this point, I think it is a forgone conclusion for Pentax. They had a lead and let it go. If I were an executive at Pentax and wanted to commit professional suicide, I would insist that we make a successor to the 645Z. It is unfortunate but as you know opportunity only knocks once.