Pentax X70 vs Sony RX100 III

Here, we will be looking at the Pentax X70 and Sony RX100 III, one being a Small Sensor Superzoom and the latter is a Large Sensor Compact by rivals Pentax and Sony. There exists a crucial gap between the sensor resolutions of the X70 (12MP) and RX100 III (20MP) and the X70 (1/2.3") and RX100 III (1") have different sensor sizing.

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The X70 was brought out 6 years earlier than the RX100 III and that is quite a serious gap as far as technology is concerned. Both the cameras feature different body design with the Pentax X70 being a SLR-like (bridge) camera and the Sony RX100 III being a Large Sensor Compact camera.

Before getting right into a complete comparison, here is a brief summary of how the X70 grades versus the RX100 III in terms of portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Pentax X70 and Sony Cyber-shot DSC-RX100 III. The entire galleries are provided at Pentax X70 Gallery and Sony RX100 III Gallery.

In case you're aiming to lug around your camera frequently, you are going to need to consider its weight and measurements. The Pentax X70 features exterior dimensions of 110mm x 83mm x 90mm (4.3" x 3.3" x 3.5") with a weight of 410 grams (0.90 lbs) and the Sony RX100 III has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") accompanied by a weight of 290 grams (0.64 lbs).

Compare the Pentax X70 and Sony RX100 III in the latest Camera with Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you choose at that time. Here is a front view dimensions comparison of the X70 against the RX100 III.

Using dimensions and weight, the portability grade of the X70 and RX100 III is 71 and 89 respectively.

Quite often, its hard to picture the gap between sensor measurements just by reading a spec sheet. The graphic underneath should provide you a much better sense of the sensor sizes in the X70 and RX100 III.

As you can see, each of the cameras feature different megapixels and different sensor measurements. The X70 because of its tinier sensor is going to make shooting shallower depth of field more difficult and the Sony RX100 III will offer extra detail having its extra 8 Megapixels. Higher resolution can also enable you to crop pictures way more aggressively. The older X70 is going to be disadvantaged with regard to sensor technology.