Leica M9-P vs Sony A7R III

Here is a in depth comparison of the Leica M9-P and Sony A7R III, both Pro Mirrorless digital cameras by competitors Leica and Sony. There is a noticeable difference between the image resolutions of the M9-P (18MP) and A7R III (42MP) but they use the same exact sensor dimensions (Full frame).

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The M9-P was launched 7 years before the A7R III and that is quite a sizable difference as far as tech is concerned. Each of these cameras offer different body type with the Leica M9-P being a Rangefinder-style mirrorless camera and the Sony A7R III being a SLR-style mirrorless camera.

Before diving through a detailed comparison, below is a concise summary of how the M9-P matches up vs the A7R III in regards to portability, imaging, features and an overall rating.

Here is a sample of the gallery pics for Leica M9-P & Sony Alpha A7R III. The complete galleries are viewable at Leica M9-P Gallery & Sony A7R III Gallery.

For those who are intending to carry your camera, you will need to take into account its weight and proportions. The Leica M9-P has got external measurements of 139mm x 80mm x 37mm (5.5" x 3.1" x 1.5") accompanied by a weight of 600 grams (1.32 lbs) while the Sony A7R III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") accompanied by a weight of 657 grams (1.45 lbs).

See the Leica M9-P and Sony A7R III in our newest Camera plus Lens Size Comparison Tool.

Do not forget, the weight of an ILC will change based on the lens you use during that time. The following is the front view measurements comparison of the M9-P against the A7R III.

Considering size and weight, the portability rating of the M9-P and A7R III is 78 and 63 respectively.

In many cases, it can be hard to see the contrast between sensor sizing only by going over a spec sheet. The graphic below might provide you a much better sense of the sensor sizing in the M9-P and A7R III.

Clearly, both of these cameras offer the same exact sensor sizing but not the same MP. You can expect to see the Sony A7R III to offer you greater detail utilizing its extra 24 Megapixels. Greater resolution can also allow you to crop images a little more aggressively. The older M9-P is going to be behind in sensor tech.