Pentax K10D vs Sony A7 III

Here is a extended comparison of the Pentax K10D vs Sony A7 III, former being a Advanced DSLR while the latter is a Pro Mirrorless by manufacturers Pentax and Sony. There is a noticeable difference between the sensor resolutions of the K10D (10MP) and A7 III (24MP) and the K10D (APS-C) and A7 III (Full frame) offer totally different sensor size.

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The K10D was manufactured 12 years before the A7 III and that is quite a sizable difference as far as tech is concerned. Both the cameras have different body design with the Pentax K10D being a Mid-size SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving straight to a more detailed comparison, here is a short summary of how the K10D scores against the A7 III in the way of portability, imaging, features and an overall rating.

This is a preview of the gallery images for Pentax K10D & Sony Alpha A7 III. The entire galleries are provided at Pentax K10D Gallery & Sony A7 III Gallery.

If you're intending to carry your camera frequently, you need to think about its weight and size. The Pentax K10D comes with physical measurements of 142mm x 101mm x 70mm (5.6" x 4.0" x 2.8") having a weight of 793 grams (1.75 lbs) whilst the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Contrast the Pentax K10D vs Sony A7 III in our completely new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary dependant on the lens you choose at the time. The following is a front view overall size comparison of the K10D compared to the A7 III.

Taking into account size and weight, the portability rating of the K10D and A7 III is 59 and 63 respectively.

Often, it is difficult to see the gap between sensor sizing only by going over a spec sheet. The visual here might provide you a better sense of the sensor measurements in the K10D and A7 III.

As you can see, both of those cameras provide different resolutions and different sensor sizing. The K10D featuring a tinier sensor will make achieving shallow DOF tougher and the Sony A7 III will offer you extra detail due to its extra 14MP. Higher resolution will help you crop pictures more aggressively. The older K10D is going to be disadvantaged with regard to sensor innovation.