Olympus E-M5 III vs Sony A9

Here is a complete analysis of the Olympus E-M5 III and Sony A9, former being a Advanced Mirrorless while the other is a Pro Mirrorless by rivals Olympus and Sony. The resolution of the E-M5 III (20MP) and the A9 (24MP) is fairly close but the E-M5 III (Four Thirds) and A9 (Full frame) have different sensor sizing.

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The E-M5 III was announced 2 years later than the A9 and that is a fairly serious difference as far as camera tech is concerned. Both of the cameras feature the same body design (SLR-style mirrorless).

Before going right into a thorough comparison, here is a quick overview of how the E-M5 III grades versus the A9 when considering portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Olympus OM-D E-M5 III & Sony Alpha A9. The whole galleries are available at Olympus E-M5 III Gallery & Sony A9 Gallery.

For anybody who is going to carry your camera often, you are going to need to factor in its weight and size. The Olympus E-M5 III has outside dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") with a weight of 414 grams (0.91 lbs) whilst the Sony A9 has specifications of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") accompanied by a weight of 673 grams (1.48 lbs).

Check the Olympus E-M5 III and Sony A9 in our brand new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will change based on the lens you are employing at that moment. Underneath is a front view over all size comparison of the E-M5 III versus the A9.

Looking at size and weight, the portability grade of the E-M5 III and A9 is 80 and 65 respectively.

Usually, it's difficult to imagine the contrast in sensor sizing only by researching specifications. The visual underneath may provide you a better sense of the sensor dimensions in the E-M5 III and A9.

Plainly, each of these cameras come with different megapixels and different sensor sizing. The E-M5 III having a smaller sensor is going to make shooting shallower DOF trickier and the Sony A9 will provide you with extra detail with its extra 4 Megapixels. Greater resolution can also enable you to crop photos a good deal more aggressively. The more recent E-M5 III should have a benefit with regard to sensor technology.