Pentax 645D vs Sony RX100 II

The following is a complete comparison of the Pentax 645D and Sony RX100 II, one is a Pro DSLR and the other is a Large Sensor Compact by manufacturers Pentax and Sony. There exists a big gap between the sensor resolutions of the 645D (40MP) and RX100 II (20MP) and the 645D (Medium format) and RX100 II (1") offer different sensor dimensions.

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The 645D was released 4 years before the RX100 II which is quite a big gap as far as technology is concerned. Each of the cameras have different body design with the Pentax 645D being a Large SLR camera and the Sony RX100 II being a Large Sensor Compact camera.

Before getting straight to a thorough comparison, here is a quick view of how the 645D scores versus the RX100 II in relation to portability, imaging, features and an overall mark.

The following is a sample of the gallery pictures for Pentax 645D and Sony Cyber-shot DSC-RX100 II. The complete galleries are viewable at Pentax 645D Gallery and Sony RX100 II Gallery.

If you are planning to travel with your camera regularly, you are going to need to factor its weight and dimensions. The Pentax 645D has got outer measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") along with a weight of 1480 grams (3.26 lbs) whilst the Sony RX100 II has dimensions of 102mm x 58mm x 38mm (4.0" x 2.3" x 1.5") having a weight of 281 grams (0.62 lbs).

See the Pentax 645D and Sony RX100 II in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary based on the lens you are working with during that time. Below is a front view sizing comparison of the 645D versus the RX100 II.

Looking at dimensions and weight, the portability grade of the 645D and RX100 II is 50 and 89 respectively.

Typically, it is very tough to visualize the contrast between sensor dimensions merely by reading specifications. The picture below should give you a stronger sense of the sensor sizing in the 645D and RX100 II.

To sum up, the two cameras provide different resolutions and different sensor dimensions. The 645D because of its larger sensor is going to make achieving shallow DOF easier and the Pentax 645D will deliver more detail as a result of its extra 20 Megapixels. Greater resolution will help you crop images more aggressively. The more aged 645D is going to be disadvantaged when it comes to sensor innovation.