Pentax K-r vs Sony A9

Here is a detailed review of the Pentax K-r vs Sony A9, one being a Entry-Level DSLR and the latter is a Pro Mirrorless by rivals Pentax and Sony. There exists a significant gap between the sensor resolutions of the K-r (12MP) and A9 (24MP) and the K-r (APS-C) and A9 (Full frame) use different sensor measurements.

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The K-r was brought out 7 years earlier than the A9 and that is quite a sizable gap as far as technology is concerned. Each of the cameras offer different body type with the Pentax K-r being a Compact SLR camera and the Sony A9 being a SLR-style mirrorless camera.

Before we go straight into a detailed comparison, below is a brief highlight of how the K-r matches up versus the A9 when it comes to portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Pentax K-r and Sony Alpha A9. The entire galleries are available at Pentax K-r Gallery and Sony A9 Gallery.

For those who are looking to carry your camera frequently, you'll need to take into account its weight and measurements. The Pentax K-r comes with outside measurements of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") along with a weight of 598 grams (1.32 lbs) while the Sony A9 has proportions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") along with a weight of 673 grams (1.48 lbs).

Look at the Pentax K-r vs Sony A9 in the all new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change depending on the lens you have attached at the time. Following is the front view measurement comparison of the K-r vs the A9.

Using dimensions and weight, the portability rating of the K-r and A9 is 67 and 65 respectively.

Typically, it is very tough to imagine the difference between sensor sizing merely by reading technical specs. The graphic below might give you a clearer sense of the sensor measurements in the K-r and A9.

As you have seen, both of these cameras offer different megapixels and different sensor sizing. The K-r due to its tinier sensor is going to make achieving shallow DOF trickier and the Sony A9 will offer more detail having its extra 12MP. Higher resolution can also let you crop shots a little more aggressively. The older K-r is going to be disadvantaged in sensor tech.