Pentax W90 vs Sony A7 III

Its time to take a closer look at the Pentax W90 vs Sony A7 III, one is a Waterproof and the other is a Pro Mirrorless by companies Pentax and Sony. There is a huge difference among the sensor resolutions of the W90 (12MP) and A7 III (24MP) and the W90 (1/2.3") and A7 III (Full frame) offer totally different sensor dimensions.

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The W90 was revealed 9 years prior to the A7 III which is a fairly significant gap as far as camera tech is concerned. Each of the cameras feature different body design with the Pentax W90 being a Compact camera and the Sony A7 III being a SLR-style mirrorless camera.

Before delving straight to a detailed comparison, here is a quick view of how the W90 grades vs the A7 III in the way of portability, imaging, features and an overall mark.

Below is a sample of the gallery pictures for Pentax Optio W90 and Sony Alpha A7 III. The full galleries are provided at Pentax W90 Gallery and Sony A7 III Gallery.

For those who are aiming to travel with your camera, you should take into account its weight and dimensions. The Pentax W90 provides outer measurements of 108mm x 59mm x 25mm (4.3" x 2.3" x 1.0") having a weight of 164 grams (0.36 lbs) and the Sony A7 III has dimensions of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 650 grams (1.43 lbs).

Analyze the Pentax W90 vs Sony A7 III in the all new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at that moment. Underneath is a front view overall size comparison of the W90 compared to the A7 III.

Using size and weight, the portability grade of the W90 and A7 III is 94 and 63 respectively.

Generally, it can be hard to envision the contrast in sensor dimensions merely by researching technical specs. The picture below may offer you a much better sense of the sensor measurements in the W90 and A7 III.

As you can tell, both cameras feature different megapixel count and different sensor dimensions. The W90 with its smaller sensor will make shooting shallower DOF more challenging and the Sony A7 III will provide you with greater detail because of its extra 12 Megapixels. Greater resolution will also make it easier to crop images way more aggressively. The more aged W90 will be disadvantaged when it comes to sensor technology.