Pentax 645D vs Sony RX10

Below is a thorough assessment of the Pentax 645D versus Sony RX10, one being a Pro DSLR and the other is a Large Sensor Superzoom by brands Pentax and Sony. There is a big difference among the sensor resolutions of the 645D (40MP) and RX10 (20MP) and the 645D (Medium format) and RX10 (1") provide totally different sensor dimensions.

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The 645D was unveiled 5 years earlier than the RX10 and that 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 being a SLR-like (bridge) camera.

Before diving into a thorough comparison, here is a brief synopsis of how the 645D scores versus the RX10 in the way of portability, imaging, features and an overall grade.

Following is a sample of the gallery pics for Pentax 645D and Sony Cyber-shot DSC-RX10. The full galleries are available at Pentax 645D Gallery and Sony RX10 Gallery.

If you're planning to lug around your camera, you'll have to factor its weight and measurements. The Pentax 645D features physical 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) whilst the Sony RX10 has proportions of 129mm x 88mm x 102mm (5.1" x 3.5" x 4.0") along with a weight of 813 grams (1.79 lbs).

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

Don't forget, the weight of an Interchangeable Lens Camera will differ based on the lens you choose at that moment. Underneath is a front view over all size comparison of the 645D and the RX10.

Taking into consideration size and weight, the portability score of the 645D and RX10 is 50 and 58 respectively.

Usually, it's tough to envision the difference in sensor measurements just by checking out a spec sheet. The photograph here will provide you a clearer sense of the sensor sizes in the 645D and RX10.

As you can see, the two cameras have different megapixel count and different sensor measurements. The 645D having a larger sensor will make getting shallower depth of field easier and the Pentax 645D will produce extra detail having an extra 20MP. Greater resolution can also make it easier to crop photos a bit more aggressively. The older 645D will be disadvantaged when it comes to sensor innovation.