Pentax 645Z vs Sony RX10 IV

Here, we will be evaluating the Pentax 645Z and Sony RX10 IV, former is a Pro DSLR while the latter is a Large Sensor Superzoom by rivals Pentax and Sony. There exists a substantial gap between the sensor resolutions of the 645Z (51MP) and RX10 IV (20MP) and the 645Z (Medium format) and RX10 IV (1") posses totally different sensor sizing.

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The 645Z was manufactured 4 years before the RX10 IV which is quite a big difference as far as technology is concerned. Each of these cameras feature different body design with the Pentax 645Z being a Large SLR camera and the Sony RX10 IV being a SLR-like (bridge) camera.

Before we go right into a complete comparison, here is a short summary of how the 645Z scores against the RX10 IV in the way of portability, imaging, features and an overall mark.

This is a preview of the gallery photos for Pentax 645Z & Sony Cyber-shot DSC-RX10 IV. The entire galleries are provided at Pentax 645Z Gallery & Sony RX10 IV Gallery.

For anybody who is aiming to travel with your camera frequently, you will want to factor its weight and dimensions. The Pentax 645Z has 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) and the Sony RX10 IV has dimensions of 133mm x 94mm x 145mm (5.2" x 3.7" x 5.7") along with a weight of 1095 grams (2.41 lbs).

Take a look at the Pentax 645Z and Sony RX10 IV in our brand new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will vary depending on the lens you are employing at the time. Following is a front view scale comparison of the 645Z versus the RX10 IV.

Considering dimensions and weight, the portability grade of the 645Z and RX10 IV is 49 and 52 respectively.

More often than not, it can be tough to visualise the difference between sensor dimensions only by looking at technical specs. The picture below will help give you a much better sense of the sensor sizes in the 645Z and RX10 IV.

As you can tell, both the cameras come with different megapixels and different sensor dimensions. The 645Z due to its bigger sensor will make shooting shallow DOF easier and the Pentax 645Z will give you extra detail due to its extra 31 Megapixels. Higher resolution can also make it easier to crop shots a good deal more aggressively. The more aged 645Z is going to be disadvantaged with regard to sensor innovation.