Olympus E-M10 III vs Sony A57

Below is a detailed comparison of the Olympus E-M10 III versus Sony A57, former being a Entry-Level Mirrorless while the latter is a Entry-Level DSLR by manufacturers Olympus and Sony. The resolution of the E-M10 III (16MP) and the A57 (16MP) is relatively well matched but the E-M10 III (Four Thirds) and A57 (APS-C) use different sensor sizes.

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The E-M10 III was introduced 5 years later than the A57 and that is quite a large difference as far as tech is concerned. Both the cameras offer different body type with the Olympus E-M10 III being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before we go straight into a in-depth comparison, below is a quick summary of how the E-M10 III matches up vs the A57 with respect to portability, imaging, features and an overall grade.

Here is a preview of the gallery photos for Olympus OM-D E-M10 Mark III & Sony SLT-A57. The whole galleries are provided at Olympus E-M10 III Gallery & Sony A57 Gallery.

In case you're going to lug around your camera often, you need to think about its weight and volume. The Olympus E-M10 III offers outer 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 A57 has sizing of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).

See the Olympus E-M10 III versus Sony A57 in our brand new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will change depending on the lens you select at that time. The following is the front view proportions comparison of the E-M10 III versus the A57.

Looking at size and weight, the portability score of the E-M10 III and A57 is 80 and 64 respectively.

Oftentimes, it is very tough to picture the contrast between sensor measurements merely by checking a spec sheet. The visual here will give you a far better sense of the sensor dimensions in the E-M10 III and A57.

Clearly, each of these cameras offer the same exact resolution albeit different sensor measurements. The E-M10 III features the tinier sensor which should make achieving shallower depth of field tougher. The newer E-M10 III provides an edge in sensor tech.