Sony A7S III vs Sony A550

Here is a comprehensive analysis of the Sony A7S III and Sony A550, one being a Pro Mirrorless and the latter is a Entry-Level DSLR and both of them are sold by Sony. The sensor resolution of the A7S III (12MP) and the A550 (14MP) is pretty similar but the A7S III (Full frame) and A550 (APS-C) provide different sensor measurements.

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The A7S III was launched 10 years later than the A550 and that is quite a sizable gap as far as tech is concerned. Each of the cameras have different body design with the Sony A7S III being a SLR-style mirrorless camera and the Sony A550 being a Compact SLR camera.

Before diving straight to a detailed comparison, here is a short introduction of how the A7S III grades versus the A550 in the way of portability, imaging, features and an overall rating.

This is a preview of the gallery images for Sony Alpha A7S III and Sony Alpha DSLR-A550. The complete galleries are viewable at Sony A7S III Gallery and Sony A550 Gallery.

For anybody who is planning to carry your camera, you are going to need to factor its weight and dimensions. The Sony A7S III provides exterior measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs) whilst the Sony A550 has dimensions of 137mm x 104mm x 84mm (5.4" x 4.1" x 3.3") having a weight of 632 grams (1.39 lbs).

Contrast the Sony A7S III and Sony A550 in the latest Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are using at that moment. Following is a front view dimension comparison of the A7S III compared to the A550.

Considering size and weight, the portability grade of the A7S III and A550 is 61 and 63 respectively.

Generally, it's difficult to visualize the contrast between sensor sizing purely by going over technical specs. The photograph here will provide you a more clear sense of the sensor sizing in the A7S III and A550.

As you can tell, the two cameras provide different megapixels and different sensor sizing. The A7S III due to its bigger sensor is going to make achieving shallow DOF less difficult and the Sony A550 will deliver extra detail utilizing its extra 2MP. Higher resolution will let you crop shots more aggressively. The younger A7S III provides an edge with regard to sensor innovation.