Olympus E-M10 III vs Sony A7

The following is a in-depth comparison of the Olympus E-M10 III and Sony A7, former is a Entry-Level Mirrorless while the latter is a Pro Mirrorless by competitors Olympus and Sony. There is a sizable difference between the image resolutions of the E-M10 III (16MP) and A7 (24MP) and the E-M10 III (Four Thirds) and A7 (Full frame) use totally different sensor measurements.

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The E-M10 III was brought out 3 years after the A7 which is quite a significant difference as far as tech is concerned. Both of the cameras offer the identical body type (SLR-style mirrorless).

Before going straight into a full comparison, below is a quick overview of how the E-M10 III matches up vs the A7 in regards to portability, imaging, features and an overall mark.

Here is a preview of the gallery images for Olympus OM-D E-M10 Mark III & Sony Alpha A7. The entire galleries are available at Olympus E-M10 III Gallery & Sony A7 Gallery.

If you're planning to travel with your camera often, you're going to have to consider its weight and size. The Olympus E-M10 III offers exterior dimensions of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") with a weight of 410 grams (0.90 lbs) whilst the Sony A7 has specifications of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") and a weight of 474 grams (1.04 lbs).

Analyze the Olympus E-M10 III and Sony A7 in our brand new Camera plus Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change depending on the lens you use during that time. Below is the front view measurement comparison of the E-M10 III and the A7.

Taking into consideration size and weight, the portability rating of the E-M10 III and A7 is 80 and 78 respectively.

Often, it can be hard to envision the contrast between sensor dimensions merely by looking at technical specs. The pic underneath should give you a more clear sense of the sensor sizes in the E-M10 III and A7.

As you have seen, both of the cameras enjoy different resolutions and different sensor dimensions. The E-M10 III featuring a tinier sensor will make getting shallower DOF more difficult and the Sony A7 will resolve greater detail having its extra 8MP. Higher resolution can also allow you to crop pictures far more aggressively. The younger E-M10 III is going to have an advantage in sensor technology.