Sony A7S III vs Sony A6400

Here is a complete comparison of the Sony A7S III vs Sony A6400, one being a Pro Mirrorless and the latter is a Advanced Mirrorless and both of them are manufactured by Sony. There exists a sizeable gap among the image resolutions of the A7S III (12MP) and A6400 (24MP) and the A7S III (Full frame) and A6400 (APS-C) feature different sensor sizes.

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The A7S III was brought out 19 months later than the A6400 which makes the cameras a generation apart from one another. The two cameras come with different body type with the Sony A7S III being a SLR-style mirrorless camera and the Sony A6400 being a Rangefinder-style mirrorless camera.

Before diving in to a detailed comparison, below is a brief synopsis of how the A7S III scores vs the A6400 in the way of portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Sony Alpha A7S III and Sony Alpha a6400. The entire galleries are provided at Sony A7S III Gallery and Sony A6400 Gallery.

When you are aiming to carry your camera regularly, you will have to factor in its weight and dimensions. The Sony A7S III has external dimensions 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 A6400 has dimensions of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") accompanied by a weight of 403 grams (0.89 lbs).

See the Sony A7S III vs Sony A6400 in the all new Camera with Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will differ dependant on the lens you have attached at that moment. Below is the front view measurements comparison of the A7S III vs the A6400.

Taking into consideration dimensions and weight, the portability rating of the A7S III and A6400 is 61 and 83 respectively.

Sometimes, it is hard to visualize the difference in sensor sizing only by going through technical specs. The visual here will help offer you a more clear sense of the sensor dimensions in the A7S III and A6400.

As you have seen, both of the cameras have got different megapixel count and different sensor sizing. The A7S III because of its bigger sensor is going to make getting shallow depth of field less difficult and the Sony A6400 will provide extra detail having its extra 12MP. Higher resolution will also let you crop pictures much more aggressively. The newer A7S III should have an edge when it comes to sensor innovation.