Olympus E-M1 II vs Sony A77

Let's look much closer at the Olympus E-M1 II and Sony A77, one is a Pro Mirrorless and the other is a Advanced DSLR by manufacturers Olympus and Sony. The resolution of the E-M1 II (20MP) and the A77 (24MP) is fairly comparable but the E-M1 II (Four Thirds) and A77 (APS-C) posses different sensor measurements.

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The E-M1 II was brought out 4 years after the A77 which is a fairly significant gap as far as camera technology is concerned. Both cameras feature different body design with the Olympus E-M1 II being a SLR-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.

Before we go right into a detailed comparison, here is a brief summation of how the E-M1 II scores versus the A77 with regard to portability, imaging, features and an overall score.

This is a sample of the gallery pictures for Olympus OM-D E-M1 Mark II and Sony SLT-A77. The entire galleries are viewable at Olympus E-M1 II Gallery and Sony A77 Gallery.

In case you're aiming to carry around your camera regularly, you'll have to consider its weight and size. The Olympus E-M1 II has got outside measurements of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") accompanied by a weight of 574 grams (1.27 lbs) while the Sony A77 has specifications of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") with a weight of 732 grams (1.61 lbs).

See the Olympus E-M1 II and Sony A77 in the all new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change dependant on the lens you are working with at that moment. Underneath is a front view scale comparison of the E-M1 II and the A77.

Considering dimensions and weight, the portability score of the E-M1 II and A77 is 68 and 59 respectively.

Typically, it is hard to picture the gap in sensor sizes just by seeing a spec sheet. The pic underneath should provide you a greater sense of the sensor sizing in the E-M1 II and A77.

As you can see, both cameras feature different resolutions and different sensor sizes. The E-M1 II featuring a smaller sensor is going to make shooting shallow DOF more challenging and the Sony A77 will produce extra detail having its extra 4 Megapixels. Greater resolution will enable you to crop photos way more aggressively. The more modern E-M1 II provides an advantage when it comes to sensor tech.