Pentax 645Z bajo el agua
The chance is there that Sony will announced a proper new Sony medium format can fixed lens camera this year. And if that happens it will surely use that great new Sony 50MP sensor used by the recently newly announced Phase One, Pentax and Hasselblad cameras. So here is a roundup of test to see what such a sensor can deliver in terms of IQ:
Quesabesde posted some RAW image samples with the IQ250 if you want to pixel peep them and see what a Sony 50MP sensor can deliver you
Pentax 645Z Sample Images at Photographyblog.
Hasselblad H5D-50C vs Phase One IQ250 at DSLRmagazine (google translation here).