Casio EX-Z90 vs Sony A7S III

The following is a extended review of the Casio EX-Z90 vs Sony A7S III, one is a Small Sensor Compact and the other is a Pro Mirrorless by rivals Casio and Sony. The image resolution of the EX-Z90 (12MP) and the A7S III (12MP) is fairly similar but the EX-Z90 (1/2.3") and A7S III (Full frame) use totally different sensor measurements.

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The EX-Z90 was released 12 years before the A7S III which is quite a large gap as far as tech is concerned. Both of these cameras offer different body type with the Casio EX-Z90 being a Compact camera and the Sony A7S III being a SLR-style mirrorless camera.

Before going in to a comprehensive comparison, below is a quick summary of how the EX-Z90 matches up vs the A7S III in terms of portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Casio Exilim EX-Z90 and Sony Alpha A7S III. The complete galleries are viewable at Casio EX-Z90 Gallery and Sony A7S III Gallery.

For anybody who is going to travel with your camera regularly, you are going to need to think about its weight and measurements. The Casio EX-Z90 provides external measurements of 90mm x 52mm x 19mm (3.5" x 2.0" x 0.7") along with a weight of 121 grams (0.27 lbs) whilst the Sony A7S III has proportions of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") accompanied by a weight of 699 grams (1.54 lbs).

Check out the Casio EX-Z90 vs Sony A7S III in the all new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with during that time. The following is the front view dimension comparison of the EX-Z90 and the A7S III.

Taking into account size and weight, the portability score of the EX-Z90 and A7S III is 96 and 61 respectively.

Often, it can be tough to see the gap between sensor dimensions purely by reading technical specs. The picture underneath might offer you a stronger sense of the sensor measurements in the EX-Z90 and A7S III.

As you have seen, both of these cameras enjoy the same exact MP but not the same sensor dimensions. The EX-Z90 has the tinier sensor which will make achieving shallower DOF harder. The more aged EX-Z90 is going to be disadvantaged when it comes to sensor technology.