Pentax 645Z vs Sony RX1R II

Here, we are matching up the Pentax 645Z vs Sony RX1R II, former is a Pro DSLR while the other is a Large Sensor Compact by competitors Pentax and Sony. There exists a considerable gap between the sensor resolutions of the 645Z (51MP) and RX1R II (42MP) and the 645Z (Medium format) and RX1R II (Full frame) provide totally different sensor size.

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The 645Z was announced 18 months before the RX1R II making them a generation away from one another. Both cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Sony RX1R II being a Large Sensor Compact camera.

Before we go straight to a thorough comparison, here is a concise summation of how the 645Z matches up versus the RX1R II when it comes to portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Pentax 645Z & Sony Cyber-shot DSC-RX1R II. The whole galleries are viewable at Pentax 645Z Gallery & Sony RX1R II Gallery.

If you're intending to carry around your camera, you have to factor its weight and volume. The Pentax 645Z offers physical dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") having a weight of 1550 grams (3.42 lbs) while the Sony RX1R II has sizing of 113mm x 65mm x 72mm (4.4" x 2.6" x 2.8") having a weight of 507 grams (1.12 lbs).

Look at the Pentax 645Z vs Sony RX1R II in our newest Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change based on the lens you are using at the time. Following is a front view measurement comparison of the 645Z compared to the RX1R II.

Considering dimensions and weight, the portability score of the 645Z and RX1R II is 49 and 78 respectively.

Quite often, it is difficult to envision the difference between sensor sizes simply by reading technical specs. The picture below will help provide you a stronger sense of the sensor sizes in the 645Z and RX1R II.

As you have seen, both of these cameras feature different resolutions and different sensor sizes. The 645Z with its larger sensor will make achieving shallower DOF less difficult and the Pentax 645Z will deliver greater detail with its extra 9MP. Greater resolution can also let you crop photos way more aggressively. The more aged 645Z is going to be behind with regard to sensor technology.