Pentax K-1 vs Sony A7R III

Here is a extensive analysis of the Pentax K-1 vs Sony A7R III, one being a Advanced DSLR and the other is a Pro Mirrorless by manufacturers Pentax and Sony. The image resolution of the K-1 (36MP) and the A7R III (42MP) is fairly comparable and they feature the exact same sensor dimensions (Full frame).

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The K-1 was introduced 20 months earlier than the A7R III making the cameras a generation apart from one another. Each of these cameras come with different body type with the Pentax K-1 being a Mid-size SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before going straight into a full comparison, below is a simple highlight of how the K-1 grades versus the A7R III in regards to portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Pentax K-1 and Sony Alpha A7R III. The whole galleries are provided at Pentax K-1 Gallery and Sony A7R III Gallery.

For anyone who is looking to carry your camera frequently, you'll need to factor its weight and dimensions. The Pentax K-1 offers outer measurements of 137mm x 110mm x 86mm (5.4" x 4.3" x 3.4") accompanied by a weight of 1010 grams (2.23 lbs) and the Sony A7R III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 657 grams (1.45 lbs).

Compare the Pentax K-1 vs Sony A7R III in the new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary dependant on the lens you use during that time. Below is the front view dimensions comparison of the K-1 and the A7R III.

Factoring in dimensions and weight, the portability grade of the K-1 and A7R III is 55 and 63 respectively.

Quite often, it is difficult to picture the contrast in sensor sizing only by seeing specs. The visual below might provide you a greater sense of the sensor measurements in the K-1 and A7R III.

As you can plainly see, both of these cameras have got the exact same sensor measurements but different resolution. You should anticipate the Sony A7R III to provide extra detail using its extra 6 Megapixels. Greater resolution will allow you to crop pics much more aggressively. The older K-1 will be disadvantaged in sensor tech.