Canon M3 vs Sony A7 III

The following is a extended review of the Canon M3 vs Sony A7 III, former is a Entry-Level Mirrorless while the latter is a Pro Mirrorless by companies Canon and Sony. The resolution of the M3 (24MP) and the A7 III (24MP) is relatively close but the M3 (APS-C) and A7 III (Full frame) have totally different sensor sizing.

Photography Glossary

The M3 was revealed 4 years prior to the A7 III which is a fairly serious difference as far as camera technology is concerned. Both of these cameras feature different body design with the Canon M3 being a Rangefinder-style mirrorless camera and the Sony A7 III being a SLR-style mirrorless camera.

Before going straight to a complete comparison, here is a concise view of how the M3 matches up against the A7 III with regards to portability, imaging, features and an overall mark.

This is a preview of the gallery photos for Canon EOS M3 & Sony Alpha A7 III. The full galleries are viewable at Canon M3 Gallery & Sony A7 III Gallery.

If you are planning to travel with your camera frequently, you will need to factor in its weight and size. The Canon M3 enjoys outside measurements of 111mm x 68mm x 44mm (4.4" x 2.7" x 1.7") and a weight of 366 grams (0.81 lbs) while the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") along with a weight of 650 grams (1.43 lbs).

See the Canon M3 vs Sony A7 III in our completely new Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will vary based on the lens you are employing during that time. Below is a front view sizing comparison of the M3 compared to the A7 III.

Considering dimensions and weight, the portability rating of the M3 and A7 III is 85 and 63 respectively.

More often than not, it's difficult to see the contrast in sensor dimensions merely by researching a spec sheet. The picture below may give you a stronger sense of the sensor sizing in the M3 and A7 III.

Clearly, both of these cameras come with the identical megapixel count albeit not the same sensor dimensions. The M3 has the smaller sensor which should make achieving bokeh tougher. The more aged M3 will be behind in sensor tech.