Pentax X90 vs Sony RX100 IV

On this page, we are looking at the Pentax X90 vs Sony RX100 IV, one being a Small Sensor Superzoom and the other is a Large Sensor Compact by manufacturers Pentax and Sony. There is a significant difference between the sensor resolutions of the X90 (12MP) and RX100 IV (20MP) and the X90 (1/2.3") and RX100 IV (1") posses totally different sensor dimensions.

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The X90 was brought out 5 years prior to the RX100 IV and that is quite a sizable gap as far as tech is concerned. Both the cameras have different body design with the Pentax X90 being a SLR-like (bridge) camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before going straight to a complete comparison, here is a simple synopsis of how the X90 grades versus the RX100 IV in the way of portability, imaging, features and an overall grade.

Here is a sample of the gallery pictures for Pentax X90 and Sony Cyber-shot DSC-RX100 IV. The entire galleries are available at Pentax X90 Gallery and Sony RX100 IV Gallery.

If you are looking to lug around your camera frequently, you will have to think about its weight and dimensions. The Pentax X90 features outer dimensions of 111mm x 85mm x 110mm (4.4" x 3.3" x 4.3") having a weight of 428 grams (0.94 lbs) whilst the Sony RX100 IV has dimensions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") with a weight of 298 grams (0.66 lbs).

Look at the Pentax X90 vs Sony RX100 IV in the all new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose at that moment. The following is a front view physical size comparison of the X90 vs the RX100 IV.

Taking into consideration size and weight, the portability grade of the X90 and RX100 IV is 69 and 89 respectively.

Oftentimes, it can be tough to envision the gap between sensor measurements only by reading specifications. The graphic underneath will offer you a much better sense of the sensor sizes in the X90 and RX100 IV.

Plainly, both cameras provide different resolutions and different sensor measurements. The X90 due to its tinier sensor will make achieving shallower DOF harder and the Sony RX100 IV will offer more detail having its extra 8MP. Greater resolution will also enable you to crop photos more aggressively. The older X90 is going to be disadvantaged in sensor tech.