Olympus E-M5 III vs Sony A390

Here is a complete comparison of the Olympus E-M5 III and Sony A390, former being a Advanced Mirrorless while the latter is a Entry-Level DSLR by competitors Olympus and Sony. There is a sizable difference among the sensor resolutions of the E-M5 III (20MP) and A390 (14MP) and the E-M5 III (Four Thirds) and A390 (APS-C) posses different sensor size.

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The E-M5 III was introduced 9 years later than the A390 and that is a fairly significant difference as far as camera tech is concerned. The two cameras feature different body design with the Olympus E-M5 III being a SLR-style mirrorless camera and the Sony A390 being a Compact SLR camera.

Before we go straight to a comprehensive comparison, here is a concise summation of how the E-M5 III matches up vs the A390 with respect to portability, imaging, features and an overall rating.

This is a preview of the gallery images for Olympus OM-D E-M5 III & Sony Alpha DSLR-A390. The whole galleries are available at Olympus E-M5 III Gallery & Sony A390 Gallery.

When you are aiming to carry your camera often, you need to factor in its weight and volume. The Olympus E-M5 III offers physical measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") and a weight of 414 grams (0.91 lbs) and the Sony A390 has sizing of 128mm x 97mm x 86mm (5.0" x 3.8" x 3.4") accompanied by a weight of 549 grams (1.21 lbs).

See the Olympus E-M5 III and Sony A390 in our completely new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will change dependant on the lens you select at that time. Here is a front view measurement comparison of the E-M5 III compared to the A390.

Considering size and weight, the portability score of the E-M5 III and A390 is 80 and 66 respectively.

Generally, it's hard to picture the difference in sensor sizing simply by seeing a spec sheet. The photograph below will give you a clearer sense of the sensor sizing in the E-M5 III and A390.

As you can see, each of these cameras feature different megapixels and different sensor sizing. The E-M5 III using its smaller sensor is going to make achieving shallower DOF tougher and the Olympus E-M5 III will produce more detail using its extra 6 Megapixels. Higher resolution will enable you to crop pictures way more aggressively. The younger E-M5 III should have a benefit when it comes to sensor innovation.