Olympus E-M10 IV vs Sony A7S II

Below, we will be comparing the Olympus E-M10 IV and Sony A7S II, one is a Entry-Level Mirrorless and the latter is a Pro Mirrorless by companies Olympus and Sony. There exists a crucial gap between the resolutions of the E-M10 IV (20MP) and A7S II (12MP) and the E-M10 IV (Four Thirds) and A7S II (Full frame) come with totally different sensor sizes.

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The E-M10 IV was introduced 4 years after the A7S II which is quite a serious gap as far as technology is concerned. Both the cameras come with the identical body type (SLR-style mirrorless).

Before getting in to a complete comparison, below is a concise summary of how the E-M10 IV scores vs the A7S II with regard to portability, imaging, features and an overall score.

This is a preview of the gallery images for Olympus OM-D E-M10 IV and Sony Alpha A7S II. The whole galleries are provided at Olympus E-M10 IV Gallery and Sony A7S II Gallery.

For anyone who is intending to carry around your camera often, you'll need to factor in its weight and dimensions. The Olympus E-M10 IV features physical measurements of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") along with a weight of 383 grams (0.84 lbs) while the Sony A7S II has dimensions of 127mm x 96mm x 60mm (5.0" x 3.8" x 2.4") accompanied by a weight of 627 grams (1.38 lbs).

Check out the Olympus E-M10 IV and Sony A7S II in the latest Camera with Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will differ depending on the lens you select at that moment. Below is the front view sizing comparison of the E-M10 IV vs the A7S II.

Taking into account dimensions and weight, the portability score of the E-M10 IV and A7S II is 81 and 68 respectively.

More often than not, its tough to see the contrast between sensor sizes simply by looking at a spec sheet. The pic below may provide you a better sense of the sensor sizing in the E-M10 IV and A7S II.

As you can see, the 2 cameras have got different megapixels and different sensor sizes. The E-M10 IV having a tinier sensor will make shooting shallow DOF more challenging and the Olympus E-M10 IV will give extra detail using its extra 8MP. Higher resolution can also enable you to crop pictures much more aggressively. The fresher E-M10 IV is going to have a benefit in sensor tech.