Olympus E-M5 III vs Sony A900

Below, we are reviewing the Olympus E-M5 III and Sony A900, one is a Advanced Mirrorless and the other is a Advanced DSLR by rivals Olympus and Sony. The sensor resolution of the E-M5 III (20MP) and the A900 (25MP) is very comparable but the E-M5 III (Four Thirds) and A900 (Full frame) feature totally different sensor sizing.

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The E-M5 III was brought out 11 years after the A900 which is a fairly significant gap as far as camera technology is concerned. Both of these cameras come with different body type with the Olympus E-M5 III being a SLR-style mirrorless camera and the Sony A900 being a Mid-size SLR camera.

Before getting straight into a in-depth comparison, below is a concise view of how the E-M5 III scores vs the A900 with regards to portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Olympus OM-D E-M5 III and Sony Alpha DSLR-A900. The entire galleries are viewable at Olympus E-M5 III Gallery and Sony A900 Gallery.

In case you're looking to travel with your camera frequently, you have to take into account its weight and proportions. The Olympus E-M5 III features outside measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") having a weight of 414 grams (0.91 lbs) while the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") along with a weight of 895 grams (1.97 lbs).

See the Olympus E-M5 III and Sony A900 in the latest Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you have attached at that time. Following is the front view overall size comparison of the E-M5 III against the A900.

Looking at dimensions and weight, the portability grade of the E-M5 III and A900 is 80 and 54 respectively.

Normally, its tough to visualise the gap in sensor dimensions merely by going through technical specs. The picture underneath may offer you a far better sense of the sensor measurements in the E-M5 III and A900.

As you have seen, both of these cameras posses different resolutions and different sensor dimensions. The E-M5 III because of its smaller sensor will make achieving shallow DOF trickier and the Sony A900 will provide more detail having its extra 5MP. Greater resolution will also enable you to crop images somewhat more aggressively. The more recent E-M5 III is going to have an edge in sensor innovation.