Pentax 645D vs Sony RX10 III

Lets look more closely at the Pentax 645D versus Sony RX10 III, one is a Pro DSLR and the other is a Large Sensor Superzoom by manufacturers Pentax and Sony. There is a crucial difference between the sensor resolutions of the 645D (40MP) and RX10 III (20MP) and the 645D (Medium format) and RX10 III (1") offer different sensor sizes.

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The 645D was introduced 7 years earlier than the RX10 III which is quite a serious gap as far as tech is concerned. Both cameras feature different body design with the Pentax 645D being a Large SLR camera and the Sony RX10 III being a SLR-like (bridge) camera.

Before we go into a in depth comparison, here is a quick highlight of how the 645D matches up versus the RX10 III when considering portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Pentax 645D and Sony Cyber-shot DSC-RX10 III. The whole galleries are viewable at Pentax 645D Gallery and Sony RX10 III Gallery.

If you are intending to travel with your camera, you will need to take into account its weight and volume. The Pentax 645D has exterior measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs) and the Sony RX10 III has sizing of 133mm x 94mm x 127mm (5.2" x 3.7" x 5.0") accompanied by a weight of 1051 grams (2.32 lbs).

Compare the Pentax 645D versus Sony RX10 III in the new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are employing at the time. Here is a front view sizing comparison of the 645D compared to the RX10 III.

Using size and weight, the portability score of the 645D and RX10 III is 50 and 53 respectively.

Often, it can be difficult to picture the gap between sensor dimensions merely by going over specifications. The pic here might provide you a stronger sense of the sensor measurements in the 645D and RX10 III.

To sum up, each of the cameras come with different megapixel count and different sensor dimensions. The 645D having a larger sensor is going to make getting shallower DOF less difficult and the Pentax 645D will offer extra detail using its extra 20MP. Greater resolution can also let you crop images a good deal more aggressively. The more aged 645D is going to be disadvantaged when it comes to sensor tech.