Leica M9 vs Sony A6400

Here is a extensive assessment of the Leica M9 vs Sony A6400, one being a Pro Mirrorless and the latter is a Advanced Mirrorless by brands Leica and Sony. There exists a significant gap between the image resolutions of the M9 (18MP) and A6400 (24MP) and the M9 (Full frame) and A6400 (APS-C) feature different sensor measurements.

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The M9 was revealed 10 years prior to the A6400 and that is quite a sizable gap as far as technology is concerned. Both cameras come with the identical body type (Rangefinder-style mirrorless).

Before diving straight into a comprehensive comparison, below is a quick highlight of how the M9 grades against the A6400 with respect to portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Leica M9 and Sony Alpha a6400. The full galleries are available at Leica M9 Gallery and Sony A6400 Gallery.

If you're going to carry your camera frequently, you will have to take into account its weight and proportions. The Leica M9 offers outer dimensions of 139mm x 80mm x 37mm (5.5" x 3.1" x 1.5") accompanied by a weight of 585 grams (1.29 lbs) and the Sony A6400 has measurements of 120mm x 67mm x 50mm (4.7" x 2.6" x 2.0") along with a weight of 403 grams (0.89 lbs).

See the Leica M9 vs Sony A6400 in the new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change based on the lens you select at that time. Following is the front view measurements comparison of the M9 compared to the A6400.

Considering dimensions and weight, the portability score of the M9 and A6400 is 79 and 83 respectively.

Typically, it can be hard to visualize the gap between sensor sizing merely by reviewing a spec sheet. The visual here will help give you a more clear sense of the sensor dimensions in the M9 and A6400.

Clearly, each of the cameras posses different resolutions and different sensor sizing. The M9 with its bigger sensor is going to make achieving bokeh easier and the Sony A6400 will offer extra detail because of its extra 6 Megapixels. Higher resolution will help you crop pictures somewhat more aggressively. The older M9 is going to be disadvantaged in sensor innovation.