Pentax XG-1 vs Sony A7S III

On this page, we are looking at the Pentax XG-1 versus Sony A7S III, one being a Small Sensor Superzoom and the other is a Pro Mirrorless by manufacturers Pentax and Sony. There is a crucial difference between the resolutions of the XG-1 (16MP) and A7S III (12MP) and the XG-1 (1/2.3") and A7S III (Full frame) posses different sensor size.

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The XG-1 was manufactured 7 years earlier than the A7S III and that is quite a serious gap as far as tech is concerned. Each of these cameras have different body design with the Pentax XG-1 being a SLR-like (bridge) camera and the Sony A7S III being a SLR-style mirrorless camera.

Before diving straight to a more detailed comparison, here is a concise highlight of how the XG-1 grades vs the A7S III for portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Pentax XG-1 and Sony Alpha A7S III. The entire galleries are provided at Pentax XG-1 Gallery and Sony A7S III Gallery.

If you are planning to lug around your camera often, you will have to think about its weight and volume. The Pentax XG-1 comes with external dimensions of 119mm x 89mm x 98mm (4.7" x 3.5" x 3.9") along with a weight of 567 grams (1.25 lbs) and the Sony A7S III has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs).

Check the Pentax XG-1 versus Sony A7S III in the all new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have chosen at the time. Underneath is a front view physical size comparison of the XG-1 vs the A7S III.

Factoring in size and weight, the portability grade of the XG-1 and A7S III is 66 and 61 respectively.

Oftentimes, its difficult to picture the difference between sensor measurements just by going over a spec sheet. The visual below should provide you a greater sense of the sensor dimensions in the XG-1 and A7S III.

As you can see, each of these cameras have different megapixel count and different sensor measurements. The XG-1 featuring a tinier sensor is going to make getting bokeh more challenging and the Pentax XG-1 will offer you extra detail due to its extra 4 Megapixels. Greater resolution will also enable you to crop photos a bit more aggressively. The older XG-1 is going to be behind in sensor tech.