Pentax K-5 vs Sony A7R III

Let's take a closer look at the Pentax K-5 vs Sony A7R III, one is a Advanced DSLR and the other is a Pro Mirrorless by manufacturers Pentax and Sony. There exists a significant gap between the image resolutions of the K-5 (16MP) and A7R III (42MP) and the K-5 (APS-C) and A7R III (Full frame) boast different sensor measurements.

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The K-5 was manufactured 7 years before the A7R III which is quite a sizable gap as far as technology is concerned. Both cameras feature different body design with the Pentax K-5 being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before getting straight to a full comparison, here is a short synopsis of how the K-5 scores vs the A7R III in relation to portability, imaging, features and an overall mark.

Below is a sample of the gallery pics for Pentax K-5 and Sony Alpha A7R III. The entire galleries are available at Pentax K-5 Gallery and Sony A7R III Gallery.

For those who are going to travel with your camera often, you are going to need to factor in its weight and size. The Pentax K-5 comes with outside measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") with a weight of 740 grams (1.63 lbs) while the Sony A7R III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

See the Pentax K-5 vs Sony A7R III in the new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change depending on the lens you are working with during that time. Following is a front view dimension comparison of the K-5 vs the A7R III.

Using dimensions and weight, the portability grade of the K-5 and A7R III is 60 and 63 respectively.

Normally, its difficult to picture the gap between sensor dimensions merely by reading specifications. The picture here will give you a stronger sense of the sensor measurements in the K-5 and A7R III.

Plainly, the two cameras come with different megapixel count and different sensor dimensions. The K-5 featuring a tinier sensor is going to make achieving shallow depth of field more difficult and the Sony A7R III will offer more detail due to its extra 26MP. Greater resolution will allow you to crop images a good deal more aggressively. The more aged K-5 is going to be behind with regard to sensor innovation.