Nah, the sensor is gobsmackingly-good, even DXO think so: https://www.dxomark.com/pentax-645z-sensor-review/ https://www.dxomark.com/pentax-645z-sensor-review/

Nah, the sensor is gobsmackingly-good, even DXO think so: https://www.dxomark.com/pentax-645z-sensor-review/ https://www.dxomark.com/pentax-645z-sensor-review/ I have a Q2 and the Pentax compares favourably, even if not all the lenses are as modern. The 645Z is a crazy bargain second-hand.