Sony A7S III vs YI M1

Let's look more closely at the Sony A7S III vs YI M1, one is a Pro Mirrorless and the other is a Entry-Level Mirrorless by companies Sony and YI. There is a sizeable difference between the sensor resolutions of the A7S III (12MP) and M1 (20MP) and the A7S III (Full frame) and M1 (Four Thirds) come with different sensor dimensions.

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The A7S III was announced 3 years after the M1 which is quite a large gap as far as tech is concerned. Both the cameras offer different body type with the Sony A7S III being a SLR-style mirrorless camera and the YI M1 being a Rangefinder-style mirrorless camera.

Before we go in to a detailed comparison, below is a quick synopsis of how the A7S III scores against the M1 in relation to portability, imaging, features and an overall mark.

Below is a sample of the gallery pics for Sony Alpha A7S III and YI M1. The whole galleries are viewable at Sony A7S III Gallery and YI M1 Gallery.

When you are intending to travel with your camera often, you will have to factor its weight and volume. The Sony A7S III provides outer measurements of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") accompanied by a weight of 699 grams (1.54 lbs) whilst the YI M1 has sizing of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") having a weight of 350 grams (0.77 lbs).

Take a look at the Sony A7S III vs YI M1 in the all new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will change based on the lens you are utilizing at that time. Below is the front view over all size comparison of the A7S III and the M1.

Taking into account size and weight, the portability rating of the A7S III and M1 is 61 and 87 respectively.

Oftentimes, it's difficult to visualize the contrast between sensor dimensions only by reviewing technical specs. The picture below will give you a clearer sense of the sensor measurements in the A7S III and M1.

As you have seen, both of these cameras offer different megapixels and different sensor dimensions. The A7S III with its larger sensor is going to make shooting shallower DOF less difficult and the YI M1 will deliver more detail with its extra 8 Megapixels. Greater resolution will allow you to crop images a little more aggressively. The more recent A7S III should have an advantage in sensor technology.