Sony A7S vs YI M1

Lets look more closely at the Sony A7S versus YI M1, one being a Pro Mirrorless and the other is a Entry-Level Mirrorless by brands Sony and YI. There is a huge difference among the image resolutions of the A7S (12MP) and M1 (20MP) and the A7S (Full frame) and M1 (Four Thirds) possess different sensor size.

Photography Glossary

The A7S was launched 3 years before the M1 and that is a fairly significant gap as far as camera tech is concerned. The two cameras offer different body type with the Sony A7S being a SLR-style mirrorless camera and the YI M1 being a Rangefinder-style mirrorless camera.

Before delving through a detailed comparison, below is a simple summation of how the A7S matches up versus the M1 in relation to portability, imaging, features and an overall grade.

Following is a sample of the gallery pictures for Sony Alpha A7S and YI M1. The complete galleries are viewable at Sony A7S Gallery and YI M1 Gallery.

For anyone who is looking to lug around your camera frequently, you will have to take into account its weight and size. The Sony A7S offers exterior dimensions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 489 grams (1.08 lbs) while the YI M1 has specifications of 114mm x 64mm x 34mm (4.5" x 2.5" x 1.3") along with a weight of 350 grams (0.77 lbs).

Check out the Sony A7S versus YI M1 in the latest Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are using at that time. Following is the front view dimensions comparison of the A7S against the M1.

Taking into account size and weight, the portability rating of the A7S and M1 is 77 and 87 respectively.

Usually, it is difficult to visualize the difference in sensor measurements just by looking through a spec sheet. The graphic underneath should give you a clearer sense of the sensor dimensions in the A7S and M1.

As you can see, the 2 cameras offer different megapixels and different sensor measurements. The A7S due to its larger sensor is going to make shooting shallow depth of field less difficult and the YI M1 will render more detail utilizing its extra 8 Megapixels. Greater resolution will also make it easier to crop photos a little more aggressively. The older A7S will be disadvantaged when it comes to sensor technology.