Pentax 645D vs Pentax K-r

The following is a extensive analysis of the Pentax 645D vs Pentax K-r, one is a Pro DSLR and the latter is a Entry-Level DSLR and they are both designed by Pentax. There exists a big gap between the image resolutions of the 645D (40MP) and K-r (12MP) and the 645D (Medium format) and K-r (APS-C) have different sensor sizes.

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The 645D was revealed 12 months prior to the K-r so they are of a similar generation. Both the cameras have different body design with the Pentax 645D being a Large SLR camera and the Pentax K-r being a Compact SLR camera.

Before we go into a full comparison, here is a simple view of how the 645D grades vs the K-r in relation to portability, imaging, features and an overall mark.

The following is a preview of the gallery images for Pentax 645D and Pentax K-r. The full galleries are available at Pentax 645D Gallery and Pentax K-r Gallery.

In case you're aiming to travel with your camera, you need to factor in its weight and size. The Pentax 645D has outer measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) whilst the Pentax K-r has specifications of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") with a weight of 598 grams (1.32 lbs).

Compare the Pentax 645D vs Pentax K-r in the new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at that time. Here is a front view proportions comparison of the 645D and the K-r.

Taking into consideration dimensions and weight, the portability rating of the 645D and K-r is 50 and 67 respectively.

More often than not, it's hard to picture the difference between sensor dimensions purely by reading through specifications. The picture underneath should provide you a clearer sense of the sensor sizing in the 645D and K-r.

Plainly, the 2 cameras have different resolutions and different sensor dimensions. The 645D using its bigger sensor is going to make getting shallow depth of field less difficult and the Pentax 645D will resolve more detail because of its extra 28 Megapixels. Higher resolution will enable you to crop photographs a bit more aggressively. The more aged 645D is going to be disadvantaged with regard to sensor tech.