Olympus E-M1 III vs Sony NEX-7

Here is a complete review of the Olympus E-M1 III and Sony NEX-7, one being a Pro Mirrorless and the latter is a Advanced Mirrorless by competitors Olympus and Sony. The image resolution of the E-M1 III (20MP) and the NEX-7 (24MP) is pretty similar but the E-M1 III (Four Thirds) and NEX-7 (APS-C) boast different sensor measurements.

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The E-M1 III was introduced 8 years later than the NEX-7 and that is quite a large gap as far as technology is concerned. Both cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony NEX-7 being a Rangefinder-style mirrorless camera.

Before delving into a step-by-step comparison, here is a short overview of how the E-M1 III scores against the NEX-7 in the way of portability, imaging, features and an overall rating.

This is a preview of the gallery images for Olympus OM-D E-M1 Mark III and Sony Alpha NEX-7. The whole galleries are available at Olympus E-M1 III Gallery and Sony NEX-7 Gallery.

For anyone who is looking to carry your camera regularly, you are going to need to factor its weight and measurements. The Olympus E-M1 III enjoys exterior dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) whilst the Sony NEX-7 has proportions of 120mm x 67mm x 43mm (4.7" x 2.6" x 1.7") having a weight of 400 grams (0.88 lbs).

Contrast the Olympus E-M1 III and Sony NEX-7 in the new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with at that moment. Underneath is a front view physical size comparison of the E-M1 III compared to the NEX-7.

Considering dimensions and weight, the portability rating of the E-M1 III and NEX-7 is 67 and 84 respectively.

Sometimes, it is very difficult to imagine the gap between sensor sizing just by reading technical specs. The graphic underneath may offer you a more clear sense of the sensor sizes in the E-M1 III and NEX-7.

As you can tell, both cameras have different resolutions and different sensor sizing. The E-M1 III using its tinier sensor is going to make shooting shallower DOF tougher and the Sony NEX-7 will deliver more detail using its extra 4 Megapixels. Higher resolution can also let you crop photographs a bit more aggressively. The newer E-M1 III should have a benefit in sensor innovation.