Pentax K-r vs Sony A7R IV

The following is a complete review of the Pentax K-r and Sony A7R IV, one is a Entry-Level DSLR and the latter is a Pro Mirrorless by brands Pentax and Sony. There is a crucial difference among the resolutions of the K-r (12MP) and A7R IV (61MP) and the K-r (APS-C) and A7R IV (Full frame) feature different sensor sizes.

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The K-r was manufactured 9 years before the A7R IV which is a fairly serious gap as far as camera tech is concerned. Both the cameras come with different body type with the Pentax K-r being a Compact SLR camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before we go straight into a step-by-step comparison, below is a short introduction of how the K-r scores vs the A7R IV in relation to portability, imaging, features and an overall mark.

The following is a preview of the gallery images for Pentax K-r and Sony Alpha A7R IV. The entire galleries are available at Pentax K-r Gallery and Sony A7R IV Gallery.

If you're planning to travel with your camera, you are going to need to factor in its weight and size. The Pentax K-r comes with outside dimensions of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") accompanied by a weight of 598 grams (1.32 lbs) whilst the Sony A7R IV has specifications of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") accompanied by a weight of 665 grams (1.47 lbs).

Compare the Pentax K-r and Sony A7R IV in the latest Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at that time. Following is the front view proportions comparison of the K-r and the A7R IV.

Factoring in size and weight, the portability score of the K-r and A7R IV is 67 and 62 respectively.

Generally, it is hard to visualize the gap in sensor dimensions only by going through specifications. The image below should give you a more clear sense of the sensor sizes in the K-r and A7R IV.

To sum up, each of these cameras posses different megapixel count and different sensor dimensions. The K-r because of its smaller sensor is going to make shooting shallow DOF trickier and the Sony A7R IV will provide extra detail due to its extra 49MP. Higher resolution can also enable you to crop shots somewhat more aggressively. The more aged K-r will be disadvantaged in sensor tech.