Sony A7S vs Sony FX3

Lets look a little more closely at the Sony A7S vs Sony FX3, both Pro Mirrorless digital cameras and both of them are designed by Sony. The image resolution of the A7S (12MP) and the FX3 (12MP) is fairly similar and they use the exact same sensor sizes (Full frame).

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The A7S was unveiled 7 years prior to the FX3 and that is quite a big difference as far as tech is concerned. Both of these cameras come with different body type with the Sony A7S being a SLR-style mirrorless camera and the Sony FX3 being a Rangefinder-style mirrorless camera.

Before going straight into a full comparison, below is a simple highlight of how the A7S scores against the FX3 in terms of portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Sony Alpha A7S & Sony FX3. The full galleries are provided at Sony A7S Gallery & Sony FX3 Gallery.

When you are looking to lug around your camera regularly, you will want to take into account its weight and size. The Sony A7S provides outside measurements of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") with a weight of 489 grams (1.08 lbs) whilst the Sony FX3 has specifications of 130mm x 78mm x 85mm (5.1" x 3.1" x 3.3") with a weight of 716 grams (1.58 lbs).

Check the Sony A7S vs Sony FX3 in our brand new Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will differ depending on the lens you choose at that time. The following is the front view measurements comparison of the A7S and the FX3.

Taking into account size and weight, the portability grade of the A7S and FX3 is 77 and 62 respectively.

In many cases, it's hard to see the difference between sensor measurements only by reading a spec sheet. The graphic underneath should give you a better sense of the sensor sizing in the A7S and FX3.

As you can see, each of these cameras posses the exact same sensor measurements and the same exact resolution therefore you can expect similar quality of photographs although you need to consider the launch date of the products into consideration. The older A7S is going to be disadvantaged with regard to sensor technology.