Pentax K-70 vs Sony A7 III

The following is a comprehensive assessment of the Pentax K-70 versus Sony A7 III, former is a Entry-Level DSLR while the latter is a Pro Mirrorless by competitors Pentax and Sony. The resolution of the K-70 (24MP) and the A7 III (24MP) is pretty well matched but the K-70 (APS-C) and A7 III (Full frame) offer different sensor dimensions.

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The K-70 was manufactured 20 months prior to the A7 III which makes them a generation away from one another. The two cameras have different body design with the Pentax K-70 being a Compact SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving into a complete comparison, here is a simple view of how the K-70 scores versus the A7 III for portability, imaging, features and an overall mark.

Below is a preview of the gallery images for Pentax K-70 & Sony Alpha A7 III. The entire galleries are viewable at Pentax K-70 Gallery & Sony A7 III Gallery.

For anyone who is going to travel with your camera often, you will need to consider its weight and volume. The Pentax K-70 features exterior dimensions of 126mm x 93mm x 74mm (5.0" x 3.7" x 2.9") with a weight of 688 grams (1.52 lbs) whilst the Sony A7 III has sizing 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 K-70 versus Sony A7 III in our brand new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ dependant on the lens you are employing at the time. Here is a front view measurement comparison of the K-70 compared to the A7 III.

Factoring in dimensions and weight, the portability rating of the K-70 and A7 III is 62 and 63 respectively.

Quite often, it is hard to imagine the contrast between sensor dimensions just by looking at a spec sheet. The picture underneath will help give you a greater sense of the sensor dimensions in the K-70 and A7 III.

As you can see, both of these cameras provide the same megapixel count albeit different sensor dimensions. The K-70 contains the tinier sensor which is going to make obtaining shallow depth of field tougher. The more aged K-70 is going to be disadvantaged in sensor tech.