Olympus E-M10 III vs Sony A7S III

Lets look a bit more in depth at the Olympus E-M10 III and Sony A7S III, former being a Entry-Level Mirrorless while the latter is a Pro Mirrorless by competitors Olympus and Sony. There exists a considerable gap among the sensor resolutions of the E-M10 III (16MP) and A7S III (12MP) and the E-M10 III (Four Thirds) and A7S III (Full frame) enjoy totally different sensor size.

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The E-M10 III was brought out 3 years prior to the A7S III and that is a fairly large difference as far as camera technology is concerned. The two cameras come with the identical body type (SLR-style mirrorless).

Before diving straight into a more detailed comparison, below is a simple view of how the E-M10 III matches up vs the A7S III for portability, imaging, features and an overall rating.

Following is a preview of the gallery images for Olympus OM-D E-M10 Mark III & Sony Alpha A7S III. The entire galleries are viewable at Olympus E-M10 III Gallery & Sony A7S III Gallery.

If you are intending to carry your camera, you will have to consider its weight and dimensions. The Olympus E-M10 III offers external dimensions of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") accompanied by a weight of 410 grams (0.90 lbs) and the Sony A7S III has dimensions of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") with a weight of 699 grams (1.54 lbs).

Take a look at the Olympus E-M10 III and Sony A7S III in our newest Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will vary depending on the lens you are using at that moment. Here is the front view size comparison of the E-M10 III vs the A7S III.

Considering dimensions and weight, the portability grade of the E-M10 III and A7S III is 80 and 61 respectively.

Typically, it's tough to see the gap in sensor sizing purely by looking through a spec sheet. The visual underneath will provide you a greater sense of the sensor dimensions in the E-M10 III and A7S III.

Clearly, the 2 cameras have got different resolutions and different sensor sizing. The E-M10 III featuring a smaller sensor will make getting shallow DOF more challenging and the Olympus E-M10 III will result in extra detail having its extra 4 Megapixels. Higher resolution can also let you crop shots much more aggressively. The older E-M10 III will be disadvantaged in sensor innovation.