Pentax 645D vs Sony RX10 IV

On this page, we are reviewing the Pentax 645D versus Sony RX10 IV, one is a Pro DSLR and the other is a Large Sensor Superzoom by rivals Pentax and Sony. There is a big difference among the sensor resolutions of the 645D (40MP) and RX10 IV (20MP) and the 645D (Medium format) and RX10 IV (1") boast different sensor sizing.

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The 645D was released 8 years earlier than the RX10 IV which is a fairly big gap as far as camera tech is concerned. Both of these cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony RX10 IV being a SLR-like (bridge) camera.

Before we go right into a in-depth comparison, here is a concise overview of how the 645D grades against the RX10 IV with respect to portability, imaging, features and an overall mark.

Below is a sample of the gallery pictures for Pentax 645D and Sony Cyber-shot DSC-RX10 IV. The complete galleries are viewable at Pentax 645D Gallery and Sony RX10 IV Gallery.

For those who are going to travel with your camera frequently, you will have to factor in its weight and size. The Pentax 645D has exterior dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs) while the Sony RX10 IV has specifications of 133mm x 94mm x 145mm (5.2" x 3.7" x 5.7") and a weight of 1095 grams (2.41 lbs).

Check the Pentax 645D versus Sony RX10 IV in the all new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary depending on the lens you have at that time. The following is a front view scale comparison of the 645D vs the RX10 IV.

Considering size and weight, the portability rating of the 645D and RX10 IV is 50 and 52 respectively.

Usually, its tough to visualize the gap in sensor dimensions purely by looking through specifications. The image here should give you a stronger sense of the sensor dimensions in the 645D and RX10 IV.

To sum up, both cameras provide different resolutions and different sensor dimensions. The 645D due to its larger sensor is going to make shooting shallower DOF less difficult and the Pentax 645D will result in more detail as a result of its extra 20MP. Greater resolution will enable you to crop photos more aggressively. The more aged 645D will be behind in sensor tech.