Pentax X70 vs Sony A7R III

Below, we will be reviewing the Pentax X70 versus Sony A7R III, former being a Small Sensor Superzoom while the latter is a Pro Mirrorless by brands Pentax and Sony. There exists a large gap between the resolutions of the X70 (12MP) and A7R III (42MP) and the X70 (1/2.3") and A7R III (Full frame) come with different sensor sizes.

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The X70 was unveiled 9 years earlier than the A7R III and that is quite a serious difference as far as technology is concerned. Both cameras come with different body type with the Pentax X70 being a SLR-like (bridge) camera and the Sony A7R III being a SLR-style mirrorless camera.

Before going through a full comparison, below is a simple overview of how the X70 grades against the A7R III in the way of portability, imaging, features and an overall grade.

Here is a preview of the gallery images for Pentax X70 & Sony Alpha A7R III. The full galleries are viewable at Pentax X70 Gallery & Sony A7R III Gallery.

If you are planning to lug around your camera regularly, you will want to factor in its weight and proportions. The Pentax X70 has exterior dimensions of 110mm x 83mm x 90mm (4.3" x 3.3" x 3.5") along with a weight of 410 grams (0.90 lbs) and the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

Check the Pentax X70 versus Sony A7R III in our completely new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary based on the lens you select at that moment. The following is the front view dimensions comparison of the X70 against the A7R III.

Factoring in dimensions and weight, the portability grade of the X70 and A7R III is 71 and 63 respectively.

Sometimes, its hard to picture the gap between sensor measurements purely by looking at specifications. The visual below will give you a much better sense of the sensor sizes in the X70 and A7R III.

Plainly, each of the cameras posses different megapixel count and different sensor measurements. The X70 having a tinier sensor is going to make shooting bokeh harder and the Sony A7R III will give more detail having an extra 30MP. Higher resolution will also allow you to crop photographs somewhat more aggressively. The older X70 is going to be behind when it comes to sensor technology.