Olympus E-M1 III vs Panasonic GM5

Following is a in depth review of the Olympus E-M1 III versus Panasonic GM5, former is a Pro Mirrorless while the other is a Entry-Level Mirrorless by rivals Olympus and Panasonic. There is a considerable difference between the image resolutions of the E-M1 III (20MP) and GM5 (16MP) but both cameras provide the same sensor sizing (Four Thirds).

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The E-M1 III was brought out 5 years after the GM5 which is quite a large difference as far as tech is concerned. Each of the cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Panasonic GM5 being a Rangefinder-style mirrorless camera.

Before getting right into a in-depth comparison, here is a concise view of how the E-M1 III grades against the GM5 with regards to portability, imaging, features and an overall score.

This is a sample of the gallery pics for Olympus OM-D E-M1 Mark III & Panasonic Lumix DMC-GM5. The entire galleries are provided at Olympus E-M1 III Gallery & Panasonic GM5 Gallery.

For anybody who is aiming to carry around your camera, you'll need to consider its weight and proportions. The Olympus E-M1 III enjoys exterior measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) and the Panasonic GM5 has measurements of 99mm x 60mm x 36mm (3.9" x 2.4" x 1.4") along with a weight of 211 grams (0.47 lbs).

Compare the Olympus E-M1 III versus Panasonic GM5 in our newest Camera & Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ based on the lens you are utilizing at that time. Here is a front view sizing comparison of the E-M1 III compared to the GM5.

Factoring in size and weight, the portability score of the E-M1 III and GM5 is 67 and 91 respectively.

In many cases, it's hard to see the gap between sensor sizes merely by reading through technical specs. The picture here should give you a better sense of the sensor measurements in the E-M1 III and GM5.

As you can tell, both of those cameras have the same sensor dimensions but not the same resolution. You can expect to see the Olympus E-M1 III to give you greater detail having its extra 4MP. Greater resolution can also help you crop pics a bit more aggressively. The younger E-M1 III will have an edge when it comes to sensor tech.