Pentax X90 vs Sony A7S III

Here is a extensive overview of the Pentax X90 and Sony A7S III, former being a Small Sensor Superzoom while the latter is a Pro Mirrorless by manufacturers Pentax and Sony. The sensor resolution of the X90 (12MP) and the A7S III (12MP) is relatively comparable but the X90 (1/2.3") and A7S III (Full frame) boast different sensor size.

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The X90 was revealed 11 years prior to the A7S III and that is a fairly significant difference as far as camera tech is concerned. Each of the cameras feature different body design with the Pentax X90 being a SLR-like (bridge) camera and the Sony A7S III being a SLR-style mirrorless camera.

Before going right into a in-depth comparison, here is a quick overview of how the X90 grades vs the A7S III when considering portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Pentax X90 & Sony Alpha A7S III. The full galleries are provided at Pentax X90 Gallery & Sony A7S III Gallery.

If you are going to carry your camera regularly, you'll have to factor in its weight and volume. The Pentax X90 comes with exterior measurements of 111mm x 85mm x 110mm (4.4" x 3.3" x 4.3") along with a weight of 428 grams (0.94 lbs) whilst the Sony A7S III has sizing of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") with a weight of 699 grams (1.54 lbs).

Analyze the Pentax X90 and Sony A7S III in our newest Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary depending on the lens you have at the time. Below is a front view proportions comparison of the X90 and the A7S III.

Taking into account size and weight, the portability rating of the X90 and A7S III is 69 and 61 respectively.

Often, its tough to picture the gap in sensor sizing merely by checking out specs. The photograph below might give you a clearer sense of the sensor measurements in the X90 and A7S III.

As you can plainly see, the two cameras come with the identical resolution albeit different sensor sizing. The X90 includes the smaller sensor which should make getting shallower DOF more difficult. The older X90 will be behind when it comes to sensor tech.