Olympus E-M1 III vs Sony A77 II

Below is a extensive overview of the Olympus E-M1 III and Sony A77 II, former being a Pro Mirrorless while the other is a Advanced DSLR by rivals Olympus and Sony. The sensor resolution of the E-M1 III (20MP) and the A77 II (24MP) is very well matched but the E-M1 III (Four Thirds) and A77 II (APS-C) feature different sensor measurements.

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The E-M1 III was introduced 5 years later than the A77 II and that is quite a large difference as far as tech is concerned. Both cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony A77 II being a Mid-size SLR camera.

Before going in to a thorough comparison, below is a short summary of how the E-M1 III scores against the A77 II in relation to portability, imaging, features and an overall grade.

This is a sample of the gallery pics for Olympus OM-D E-M1 Mark III & Sony SLT-A77 II. The whole galleries are viewable at Olympus E-M1 III Gallery & Sony A77 II Gallery.

In case you're aiming to lug around your camera frequently, you're going to have to factor in its weight and proportions. The Olympus E-M1 III comes with physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) while the Sony A77 II has measurements of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 647 grams (1.43 lbs).

Check the Olympus E-M1 III and Sony A77 II in our completely new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary dependant on the lens you are employing during that time. Below is the front view measurements comparison of the E-M1 III vs the A77 II.

Factoring in size and weight, the portability score of the E-M1 III and A77 II is 67 and 62 respectively.

Usually, it is tough to picture the contrast between sensor measurements only by looking at specifications. The graphic underneath will help offer you a far better sense of the sensor sizes in the E-M1 III and A77 II.

To sum up, each of these cameras have got different resolutions and different sensor measurements. The E-M1 III with its tinier sensor is going to make shooting shallow DOF trickier and the Sony A77 II will resolve more detail using its extra 4MP. Greater resolution will also enable you to crop pics much more aggressively. The more recent E-M1 III should have a benefit with regard to sensor technology.