Sony A7S III vs Sony A9

Below, we are analyzing the Sony A7S III versus Sony A9, both Pro Mirrorless digital cameras and both are built by Sony. There is a crucial difference between the resolutions of the A7S III (12MP) and A9 (24MP) but they possess the exact same sensor size (Full frame).

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The A7S III was revealed 3 years later than the A9 and that is quite a serious gap as far as tech is concerned. Both of these cameras come with the identical body type (SLR-style mirrorless).

Before getting straight into a comprehensive comparison, below is a concise introduction of how the A7S III scores versus the A9 in relation to portability, imaging, features and an overall grade.

The following is a sample of the gallery pictures for Sony Alpha A7S III and Sony Alpha A9. The full galleries are available at Sony A7S III Gallery and Sony A9 Gallery.

For anybody who is planning to lug around your camera frequently, you're going to have to factor in its weight and measurements. The Sony A7S III has got outside measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") and a weight of 699 grams (1.54 lbs) and the Sony A9 has proportions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") along with a weight of 673 grams (1.48 lbs).

Take a look at the Sony A7S III versus Sony A9 in the all new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change dependant on the lens you have chosen at that time. Here is the front view proportions comparison of the A7S III vs the A9.

Using size and weight, the portability grade of the A7S III and A9 is 61 and 65 respectively.

In many cases, it is hard to visualize the difference between sensor measurements just by looking at technical specs. The graphic underneath will offer you a clearer sense of the sensor measurements in the A7S III and A9.

As you can tell, each of the cameras have got the exact same sensor measurements but different MP. You should anticipate the Sony A9 to give you extra detail because of its extra 12 Megapixels. Greater resolution will enable you to crop photos much more aggressively. The more modern A7S III provides a benefit with regard to sensor technology.