Olympus E-M1 III vs Panasonic GX9

The following is a in depth analysis of the Olympus E-M1 III versus Panasonic GX9, one is a Pro Mirrorless and the other is a Advanced Mirrorless by brands Olympus and Panasonic. The sensor resolution of the E-M1 III (20MP) and the GX9 (20MP) is fairly similar and both cameras posses the identical sensor sizes (Four Thirds).

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The E-M1 III was unveiled 2 years after the GX9 which is quite a big gap as far as technology is concerned. Both the cameras feature different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Panasonic GX9 being a Rangefinder-style mirrorless camera.

Before we go into a in depth comparison, here is a simple view of how the E-M1 III grades against the GX9 with regard to portability, imaging, features and an overall mark.

Following is a sample of the gallery pictures for Olympus OM-D E-M1 Mark III and Panasonic Lumix DC-GX9. The full galleries are provided at Olympus E-M1 III Gallery and Panasonic GX9 Gallery.

For anybody who is planning to travel with your camera regularly, you are going to need to consider its weight and measurements. The Olympus E-M1 III has exterior measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) while the Panasonic GX9 has proportions of 124mm x 72mm x 47mm (4.9" x 2.8" x 1.9") having a weight of 407 grams (0.90 lbs).

Take a look at the Olympus E-M1 III versus Panasonic GX9 in the all new Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will differ depending on the lens you have chosen at that moment. Following is a front view measurements comparison of the E-M1 III against the GX9.

Taking into account dimensions and weight, the portability score of the E-M1 III and GX9 is 67 and 82 respectively.

Normally, it is very hard to visualise the difference between sensor dimensions only by reading technical specs. The pic below may give you a better sense of the sensor measurements in the E-M1 III and GX9.

As you have seen, both the cameras come with the identical sensor size and the same megapixels therefore you should expect similar quality of photographs although you need to factor the release date of the products into consideration. The more recent E-M1 III will have a benefit with regard to sensor technology.