Pentax K20D vs Sony A7R IV

Its time to look more in depth at the Pentax K20D versus Sony A7R IV, former being a Advanced DSLR while the latter is a Pro Mirrorless by companies Pentax and Sony. There is a substantial difference among the resolutions of the K20D (15MP) and A7R IV (61MP) and the K20D (APS-C) and A7R IV (Full frame) posses totally different sensor size.

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The K20D was brought out 12 years prior to the A7R IV and that is a fairly big difference as far as camera tech is concerned. Both of these cameras have different body design with the Pentax K20D being a Mid-size SLR camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before going straight to a detailed comparison, here is a short highlight of how the K20D scores versus the A7R IV in terms of portability, imaging, features and an overall grade.

The following is a preview of the gallery images for Pentax K20D & Sony Alpha A7R IV. The entire galleries are provided at Pentax K20D Gallery & Sony A7R IV Gallery.

For anybody who is aiming to lug around your camera often, you need to factor in its weight and dimensions. The Pentax K20D comes with outside dimensions of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") with a weight of 800 grams (1.76 lbs) whilst the Sony A7R IV has dimensions of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") having a weight of 665 grams (1.47 lbs).

Look at the Pentax K20D versus Sony A7R IV in our completely new Camera plus Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary depending on the lens you are working with during that time. Following is a front view dimensions comparison of the K20D vs the A7R IV.

Using size and weight, the portability score of the K20D and A7R IV is 59 and 62 respectively.

In many cases, it can be hard to see the contrast in sensor measurements just by checking out a spec sheet. The photograph below may give you a much better sense of the sensor dimensions in the K20D and A7R IV.

Clearly, the two cameras provide different megapixels and different sensor measurements. The K20D because of its smaller sensor will make getting bokeh more challenging and the Sony A7R IV will produce greater detail having its extra 46MP. Higher resolution will also make it easier to crop photographs more aggressively. The older K20D will be disadvantaged with regard to sensor innovation.