Olympus E-M10 IV vs Sony A57

Let's examine more in depth at the Olympus E-M10 IV and Sony A57, one being a Entry-Level Mirrorless and the other is a Entry-Level DSLR by competitors Olympus and Sony. There is a big difference among the image resolutions of the E-M10 IV (20MP) and A57 (16MP) and the E-M10 IV (Four Thirds) and A57 (APS-C) come with totally different sensor dimensions.

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The E-M10 IV was brought out 8 years later than the A57 and that is a fairly big gap as far as camera tech is concerned. Both of these cameras come with different body type with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Sony A57 being a Compact SLR camera.

Before diving through a step-by-step comparison, below is a short introduction of how the E-M10 IV grades vs the A57 in regards to portability, imaging, features and an overall grade.

The following is a sample of the gallery pics for Olympus OM-D E-M10 IV and Sony SLT-A57. The entire galleries are provided at Olympus E-M10 IV Gallery and Sony A57 Gallery.

For anybody who is planning to lug around your camera, you'll need to consider its weight and dimensions. The Olympus E-M10 IV has got outer measurements of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") with a weight of 383 grams (0.84 lbs) while the Sony A57 has dimensions of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).

Compare the Olympus E-M10 IV and Sony A57 in the latest Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you have chosen at that time. Here is the front view scale comparison of the E-M10 IV and the A57.

Using size and weight, the portability score of the E-M10 IV and A57 is 81 and 64 respectively.

Oftentimes, its hard to visualise the gap in sensor measurements purely by viewing specs. The visual below will help provide you a clearer sense of the sensor sizing in the E-M10 IV and A57.

All in all, each of the cameras have got different megapixel count and different sensor measurements. The E-M10 IV featuring a smaller sensor will make getting bokeh more difficult and the Olympus E-M10 IV will render more detail having its extra 4 Megapixels. Greater resolution can also enable you to crop photos much more aggressively. The more recent E-M10 IV will have an advantage in sensor tech.