Olympus E-M5 III vs Sony A100

Lets take a deeper look at the Olympus E-M5 III and Sony A100, one being a Advanced Mirrorless and the other is a Entry-Level DSLR by competitors Olympus and Sony. There is a big difference among the resolutions of the E-M5 III (20MP) and A100 (10MP) and the E-M5 III (Four Thirds) and A100 (APS-C) enjoy different sensor size.

Photography Glossary

The E-M5 III was introduced 13 years later than the A100 and that is a fairly big gap as far as camera tech is concerned. Each of these cameras offer different body type with the Olympus E-M5 III being a SLR-style mirrorless camera and the Sony A100 being a Compact SLR camera.

Before we go in to a thorough comparison, below is a quick introduction of how the E-M5 III scores versus the A100 in regards to portability, imaging, features and an overall grade.

Following is a sample of the gallery pics for Olympus OM-D E-M5 III and Sony Alpha DSLR-A100. The whole galleries are available at Olympus E-M5 III Gallery and Sony A100 Gallery.

For anybody who is aiming to lug around your camera often, you have to factor its weight and size. The Olympus E-M5 III enjoys outer measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") with a weight of 414 grams (0.91 lbs) and the Sony A100 has specifications of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") accompanied by a weight of 638 grams (1.41 lbs).

Look at the Olympus E-M5 III and Sony A100 in the all new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you are working with during that time. Following is the front view over all size comparison of the E-M5 III compared to the A100.

Taking into account size and weight, the portability rating of the E-M5 III and A100 is 80 and 64 respectively.

Often, it's hard to visualize the contrast in sensor measurements simply by going through specs. The graphic underneath may give you a clearer sense of the sensor sizing in the E-M5 III and A100.

All in all, both cameras enjoy different resolutions and different sensor measurements. The E-M5 III with its smaller sensor is going to make getting shallower DOF trickier and the Olympus E-M5 III will produce extra detail using its extra 10MP. Greater resolution will enable you to crop pics far more aggressively. The newer E-M5 III provides an advantage with regard to sensor innovation.