Pentax K-500 vs Sony A7R III

Here, we will be analyzing the Pentax K-500 vs Sony A7R III, one is a Entry-Level DSLR and the latter is a Pro Mirrorless by companies Pentax and Sony. There exists a sizeable gap among the sensor resolutions of the K-500 (16MP) and A7R III (42MP) and the K-500 (APS-C) and A7R III (Full frame) posses totally different sensor sizing.

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The K-500 was unveiled 4 years earlier than the A7R III which is a fairly large gap as far as camera technology is concerned. Both cameras feature different body design with the Pentax K-500 being a Compact SLR camera and the Sony A7R III being a SLR-style mirrorless camera.

Before we go right into a full comparison, here is a concise overview of how the K-500 scores versus the A7R III in the way of portability, imaging, features and an overall mark.

The following is a preview of the gallery images for Pentax K-500 and Sony Alpha A7R III. The full galleries are available at Pentax K-500 Gallery and Sony A7R III Gallery.

If you are aiming to travel with your camera, you're going to have to factor in its weight and proportions. The Pentax K-500 features outside measurements of 130mm x 97mm x 71mm (5.1" x 3.8" x 2.8") and a weight of 646 grams (1.42 lbs) whilst the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 657 grams (1.45 lbs).

Compare the Pentax K-500 vs Sony A7R III in the latest Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at the time. Below is a front view overall size comparison of the K-500 and the A7R III.

Using dimensions and weight, the portability score of the K-500 and A7R III is 64 and 63 respectively.

Normally, it is very difficult to visualise the gap in sensor dimensions simply by checking out specs. The image below will provide you a far better sense of the sensor sizing in the K-500 and A7R III.

As you can plainly see, both of those cameras come with different megapixels and different sensor dimensions. The K-500 having a smaller sensor will make achieving bokeh harder and the Sony A7R III will provide extra detail having an extra 26MP. Higher resolution will make it easier to crop photographs a good deal more aggressively. The more aged K-500 will be disadvantaged when it comes to sensor innovation.