Leica M10 vs Sony A7R IV

In this write-up, we are evaluating the Leica M10 versus Sony A7R IV, both Pro Mirrorless digital cameras by competitors Leica and Sony. There is a significant difference between the resolutions of the M10 (24MP) and A7R IV (61MP) but they enjoy the same exact sensor measurements (Full frame).

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The M10 was manufactured 3 years prior to the A7R IV which is quite a sizable gap as far as tech is concerned. Both of the cameras offer different body type with the Leica M10 being a Rangefinder-style mirrorless camera and the Sony A7R IV being a SLR-style mirrorless camera.

Before going through a comprehensive comparison, below is a quick view of how the M10 scores vs the A7R IV with regards to portability, imaging, features and an overall mark.

The following is a sample of the gallery pictures for Leica M10 and Sony Alpha A7R IV. The entire galleries are viewable at Leica M10 Gallery and Sony A7R IV Gallery.

When you are going to travel with your camera regularly, you need to think about its weight and proportions. The Leica M10 features external dimensions of 139mm x 80mm x 39mm (5.5" x 3.1" x 1.5") having a weight of 660 grams (1.46 lbs) while the Sony A7R IV has measurements of 129mm x 96mm x 78mm (5.1" x 3.8" x 3.1") having a weight of 665 grams (1.47 lbs).

See the Leica M10 versus Sony A7R IV in the latest Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary based on the lens you are using during that time. Underneath is the front view dimension comparison of the M10 against the A7R IV.

Using size and weight, the portability grade of the M10 and A7R IV is 75 and 62 respectively.

Usually, it's tough to visualise the difference between sensor dimensions purely by checking a spec sheet. The pic below will give you a more clear sense of the sensor dimensions in the M10 and A7R IV.

As you can see, both cameras enjoy the same exact sensor sizing but not the same resolution. You should anticipate the Sony A7R IV to give greater detail due to its extra 37MP. Greater resolution can also help you crop pics far more aggressively. The more aged M10 is going to be disadvantaged when it comes to sensor technology.