Sony A7S vs Sony A9 II

On this page, we will be analyzing the Sony A7S and Sony A9 II, both Pro Mirrorless digital cameras and both are produced by Sony. There exists a significant gap between the sensor resolutions of the A7S (12MP) and A9 II (24MP) but both cameras offer the same sensor dimensions (Full frame).

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The A7S was revealed 6 years prior to the A9 II which is quite a sizable gap as far as technology is concerned. Both cameras have the same body design (SLR-style mirrorless).

Before we go straight to a comprehensive comparison, here is a simple summary of how the A7S matches up versus the A9 II in relation to portability, imaging, features and an overall score.

The following is a preview of the gallery images for Sony Alpha A7S and Sony Alpha A9 Mark II. The full galleries are available at Sony A7S Gallery and Sony A9 II Gallery.

If you are going to carry around your camera regularly, you will have to think about its weight and size. The Sony A7S features exterior dimensions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") accompanied by a weight of 489 grams (1.08 lbs) whilst the Sony A9 II has specifications of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") with a weight of 678 grams (1.49 lbs).

Look at the Sony A7S and Sony A9 II in the new Camera with Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change based on the lens you are utilising during that time. Below is a front view overall size comparison of the A7S compared to the A9 II.

Looking at dimensions and weight, the portability score of the A7S and A9 II is 77 and 62 respectively.

Normally, it is difficult to visualize the gap between sensor sizes only by reading a spec sheet. The image underneath might provide you a clearer sense of the sensor dimensions in the A7S and A9 II.

As you can see, both the cameras have the same sensor dimensions albeit different resolution. You should expect the Sony A9 II to offer you more detail because of its extra 12 Megapixels. Higher resolution will also enable you to crop shots a bit more aggressively. The more aged A7S is going to be disadvantaged in sensor innovation.