Pentax_645D
Pentax 645D
Camera model
The Pentax 645D is a medium format digital SLR camera announced by Pentax on March 10, 2010.
Unlike other medium-format DSLRs, which accept digital camera backs of different resolutions or even manufacturers, the 645D has a fixed-back design similar to smaller full-frame and APS-C DSLRs. The fixed back allows the 645D to be fully weather-sealed.