Olympus E-M1 III vs Panasonic GH3

Its time to look more in depth at the Olympus E-M1 III and Panasonic GH3, one being a Pro Mirrorless and the latter is a Advanced Mirrorless by rivals Olympus and Panasonic. There is a big difference among the resolutions of the E-M1 III (20MP) and GH3 (16MP) but both cameras provide the identical sensor dimensions (Four Thirds).

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The E-M1 III was released 7 years later than the GH3 and that is a fairly big gap as far as camera tech is concerned. Both cameras feature the same body design (SLR-style mirrorless).

Before delving right into a in-depth comparison, here is a brief summary of how the E-M1 III scores against the GH3 in terms of portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Olympus OM-D E-M1 Mark III and Panasonic Lumix DMC-GH3. The complete galleries are viewable at Olympus E-M1 III Gallery and Panasonic GH3 Gallery.

When you are aiming to lug around your camera often, you have to take into account its weight and size. The Olympus E-M1 III comes with exterior dimensions 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 GH3 has specifications of 133mm x 93mm x 82mm (5.2" x 3.7" x 3.2") with a weight of 550 grams (1.21 lbs).

See the Olympus E-M1 III and Panasonic GH3 in the latest Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change depending on the lens you are utilizing during that time. Here is a front view dimension comparison of the E-M1 III against the GH3.

Factoring in size and weight, the portability rating of the E-M1 III and GH3 is 67 and 66 respectively.

Generally, it can be difficult to see the gap in sensor measurements merely by researching a spec sheet. The visual below will give you a clearer sense of the sensor sizes in the E-M1 III and GH3.

As you can see, the two cameras feature the identical sensor size albeit not the same resolution. You should count on the Olympus E-M1 III to result in more detail as a result of its extra 4 Megapixels. Higher resolution will allow you to crop photographs way more aggressively. The younger E-M1 III will have an advantage when it comes to sensor technology.