Pentax X90 vs Sony A7 III

In this article, we are analyzing the Pentax X90 and Sony A7 III, former being a Small Sensor Superzoom while the other is a Pro Mirrorless by rivals Pentax and Sony. There is a large difference among the sensor resolutions of the X90 (12MP) and A7 III (24MP) and the X90 (1/2.3") and A7 III (Full frame) come with different sensor sizing.

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The X90 was unveiled 8 years earlier than the A7 III and that is a fairly serious difference as far as camera tech is concerned. Each of the cameras offer different body type with the Pentax X90 being a SLR-like (bridge) camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving through a step-by-step comparison, below is a simple summary of how the X90 grades versus the A7 III with respect to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Pentax X90 & Sony Alpha A7 III. The full galleries are available at Pentax X90 Gallery & Sony A7 III Gallery.

If you are planning to carry your camera, you need to factor its weight and size. The Pentax X90 has got exterior dimensions of 111mm x 85mm x 110mm (4.4" x 3.3" x 4.3") accompanied by a weight of 428 grams (0.94 lbs) and the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 650 grams (1.43 lbs).

Check the Pentax X90 and Sony A7 III in our newest Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will differ depending on the lens you are working with during that time. The following is the front view physical size comparison of the X90 compared to the A7 III.

Taking into account size and weight, the portability rating of the X90 and A7 III is 69 and 63 respectively.

Generally, it is very difficult to picture the difference in sensor sizing just by looking through specifications. The visual underneath may give you a stronger sense of the sensor dimensions in the X90 and A7 III.

To sum up, the two cameras offer different resolutions and different sensor sizing. The X90 using its smaller sensor is going to make shooting shallower depth of field more challenging and the Sony A7 III will render greater detail having an extra 12 Megapixels. Greater resolution will help you crop pics a little more aggressively. The older X90 will be behind when it comes to sensor tech.