Originally Posted by TaoMaas 
If Pentax wants to reclaim their share of the pro market, the 645D is their best bet, IMO. Jump the megapixels and low light capability way beyond anything Canon or Nikon can accomplish even with a FF sensor. IMO, if the price was held down, such a camera might also capture a big chunk of the advanced amateur market, too...especially for those photographers for whom image quality is more important than fps and autofocus speed.
What do you think of a 1.5x crop (est) image sensor in a medium format camera? Given the high cost of medium format cameras, I've often wondered how Pentax can compete and still make profits in such a small market. The obvious answer is to lower the price. That got me thinking about how companies have done exactly that with DSLR's. And, using the same idea, there might be a way accomplish that lower price point by, like many DSLR's and unlike other medium format cameras, offering a 1.5x crop image sensor in relation to medium format - aka a
DSLR full-frame image sensor in a medium format camera. That would allow Pentax to lower prices more in line with top DSLR's using the same sensors, allowing this camera to really compete more with top DSLR's than other medium format cameras.
stewart