Pentax W90 vs Sony RX100 III

Here, we will be matching up the Pentax W90 vs Sony RX100 III, one is a Waterproof and the latter is a Large Sensor Compact by manufacturers Pentax and Sony. There is a crucial difference between the resolutions of the W90 (12MP) and RX100 III (20MP) and the W90 (1/2.3") and RX100 III (1") boast totally different sensor size.

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The W90 was revealed 5 years earlier than the RX100 III which is quite a serious gap as far as tech is concerned. Each of the cameras feature different body design with the Pentax W90 being a Compact camera and the Sony RX100 III being a Large Sensor Compact camera.

Before we go right into a thorough comparison, here is a short view of how the W90 matches up vs the RX100 III when considering portability, imaging, features and an overall score.

Here is a preview of the gallery photos for Pentax Optio W90 and Sony Cyber-shot DSC-RX100 III. The full galleries are available at Pentax W90 Gallery and Sony RX100 III Gallery.

In case you're intending to carry around your camera often, you will want to factor in its weight and proportions. The Pentax W90 offers exterior measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") along with a weight of 164 grams (0.36 lbs) while the Sony RX100 III has measurements of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") having a weight of 290 grams (0.64 lbs).

Look at the Pentax W90 vs Sony RX100 III in the new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change depending on the lens you select at that moment. Underneath is a front view dimension comparison of the W90 vs the RX100 III.

Factoring in size and weight, the portability rating of the W90 and RX100 III is 94 and 89 respectively.

Oftentimes, its difficult to visualise the gap between sensor sizes only by going over technical specs. The image underneath may offer you a better sense of the sensor sizing in the W90 and RX100 III.

As you have seen, each of the cameras feature different megapixels and different sensor sizes. The W90 having a tinier sensor will make achieving shallow DOF more difficult and the Sony RX100 III will deliver more detail because of its extra 8MP. Higher resolution will let you crop shots way more aggressively. The more aged W90 is going to be disadvantaged when it comes to sensor technology.