Pentax E90 vs Sony RX100 III

On this page, we will be looking at the Pentax E90 vs Sony RX100 III, one being a Small Sensor Compact and the latter is a Large Sensor Compact by brands Pentax and Sony. There exists a sizeable gap between the image resolutions of the E90 (10MP) and RX100 III (20MP) and the E90 (1/2.3") and RX100 III (1") offer totally different sensor measurements.

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The E90 was revealed 5 years earlier than the RX100 III and that is quite a large gap as far as technology is concerned. Both of the cameras have different body design with the Pentax E90 being a Compact camera and the Sony RX100 III being a Large Sensor Compact camera.

Before delving right into a in depth comparison, here is a brief view of how the E90 grades vs the RX100 III in terms of portability, imaging, features and an overall grade.

This is a preview of the gallery images for Pentax Optio E90 and Sony Cyber-shot DSC-RX100 III. The full galleries are viewable at Pentax E90 Gallery and Sony RX100 III Gallery.

In case you're looking to lug around your camera often, you will have to consider its weight and volume. The Pentax E90 enjoys external dimensions of 102mm x 59mm x 25mm (4.0" x 2.3" x 1.0") and a weight of 145 grams (0.32 lbs) whilst the Sony RX100 III has sizing of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") with a weight of 290 grams (0.64 lbs).

Check out the Pentax E90 vs Sony RX100 III in the new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will vary based on the lens you have chosen at that time. Below is a front view overall size comparison of the E90 vs the RX100 III.

Taking into consideration dimensions and weight, the portability grade of the E90 and RX100 III is 94 and 89 respectively.

Sometimes, its difficult to see the difference between sensor measurements simply by going over specs. The photograph underneath will provide you a more clear sense of the sensor dimensions in the E90 and RX100 III.

As you can plainly see, both cameras have different resolutions and different sensor measurements. The E90 with its tinier sensor will make achieving shallower DOF tougher and the Sony RX100 III will offer greater detail because of its extra 10MP. Higher resolution will enable you to crop shots a bit more aggressively. The older E90 is going to be behind when it comes to sensor technology.