Pentax P70 vs Sony RX100 III

Below, we are reviewing the Pentax P70 versus Sony RX100 III, one is a Ultracompact and the other is a Large Sensor Compact by rivals Pentax and Sony. There exists a huge gap between the image resolutions of the P70 (12MP) and RX100 III (20MP) and the P70 (1/2.3") and RX100 III (1") use totally different sensor sizes.

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The P70 was unveiled 6 years earlier than the RX100 III which is quite a significant gap as far as technology is concerned. Each of the cameras come with different body type with the Pentax P70 being a Ultracompact camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving straight into a comprehensive comparison, below is a concise summation of how the P70 matches up versus the RX100 III for portability, imaging, features and an overall score.

The following is a sample of the gallery pictures for Pentax Optio P70 and Sony Cyber-shot DSC-RX100 III. The full galleries are available at Pentax P70 Gallery and Sony RX100 III Gallery.

For anybody who is looking to carry around your camera often, you'll need to factor in its weight and dimensions. The Pentax P70 provides exterior measurements of 97mm x 54mm x 22mm (3.8" x 2.1" x 0.9") accompanied by a weight of 155 grams (0.34 lbs) and the Sony RX100 III has dimensions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") accompanied by a weight of 290 grams (0.64 lbs).

Check the Pentax P70 versus Sony RX100 III in the latest Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary depending on the lens you select at that moment. Following is the front view scale comparison of the P70 against the RX100 III.

Taking into account dimensions and weight, the portability grade of the P70 and RX100 III is 95 and 89 respectively.

More often than not, it's hard to visualise the contrast between sensor sizes merely by looking at technical specs. The pic here will give you a clearer sense of the sensor measurements in the P70 and RX100 III.

As you have seen, the two cameras have got different megapixel count and different sensor sizes. The P70 with its tinier sensor will make getting shallow DOF tougher and the Sony RX100 III will give extra detail having an extra 8 Megapixels. Greater resolution can also make it easier to crop pics much more aggressively. The more aged P70 is going to be behind with regard to sensor tech.