Olympus E-M1 III vs Sony A77

The following is a thorough overview of the Olympus E-M1 III vs Sony A77, one is a Pro Mirrorless and the latter is a Advanced DSLR by rivals Olympus and Sony. The sensor resolution of the E-M1 III (20MP) and the A77 (24MP) is pretty comparable but the E-M1 III (Four Thirds) and A77 (APS-C) come with totally different sensor measurements.

Photobucket discusses licensing 13 billion images with AI firms

The E-M1 III was introduced 8 years after the A77 which is a fairly serious gap as far as camera tech is concerned. The two cameras offer different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony A77 being a Mid-size SLR camera.

Before we go through a more detailed comparison, below is a quick overview of how the E-M1 III matches up versus the A77 with regard to portability, imaging, features and an overall mark.

Following is a preview of the gallery images for Olympus OM-D E-M1 Mark III and Sony SLT-A77. The whole galleries are available at Olympus E-M1 III Gallery and Sony A77 Gallery.

In case you're planning to travel with your camera frequently, you'll have to factor in its weight and measurements. The Olympus E-M1 III enjoys physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) and the Sony A77 has proportions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") and a weight of 732 grams (1.61 lbs).

Contrast the Olympus E-M1 III vs Sony A77 in the new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are using at that moment. Underneath is the front view dimension comparison of the E-M1 III compared to the A77.

Taking into account size and weight, the portability grade of the E-M1 III and A77 is 67 and 59 respectively.

Generally, its hard to see the contrast in sensor dimensions only by seeing specs. The picture here will offer you a clearer sense of the sensor sizes in the E-M1 III and A77.

All in all, each of the cameras offer different megapixel count and different sensor dimensions. The E-M1 III using its smaller sensor will make achieving shallow depth of field more difficult and the Sony A77 will provide more detail using its extra 4 Megapixels. Higher resolution will let you crop photographs a little more aggressively. The more modern E-M1 III is going to have a benefit in sensor innovation.