Olympus E-M1 III vs Sony A99 II

Let's look a bit more in depth at the Olympus E-M1 III and Sony A99 II, former is a Pro Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Sony. There is a considerable difference among the resolutions of the E-M1 III (20MP) and A99 II (42MP) and the E-M1 III (Four Thirds) and A99 II (Full frame) feature totally different sensor sizing.

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The E-M1 III was introduced 3 years after the A99 II which is a fairly large difference as far as camera tech is concerned. Both of the cameras offer different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony A99 II being a Mid-size SLR camera.

Before delving in to a thorough comparison, below is a quick overview of how the E-M1 III grades against the A99 II for portability, imaging, features and an overall score.

Below is a preview of the gallery photos for Olympus OM-D E-M1 Mark III & Sony Alpha A99 II. The whole galleries are available at Olympus E-M1 III Gallery & Sony A99 II Gallery.

In case you're going to carry around your camera regularly, you will want to factor in its weight and volume. The Olympus E-M1 III provides outside measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") along with a weight of 580 grams (1.28 lbs) whilst the Sony A99 II has sizing of 143mm x 104mm x 76mm (5.6" x 4.1" x 3.0") along with a weight of 849 grams (1.87 lbs).

Contrast the Olympus E-M1 III and Sony A99 II in our completely new Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary based on the lens you are utilising at the time. Underneath is the front view scale comparison of the E-M1 III against the A99 II.

Considering size and weight, the portability grade of the E-M1 III and A99 II is 67 and 57 respectively.

Oftentimes, its difficult to see the gap in sensor sizes only by looking through a spec sheet. The pic here will help give you a far better sense of the sensor measurements in the E-M1 III and A99 II.

Clearly, both of the cameras offer different resolutions and different sensor sizes. The E-M1 III having a smaller sensor will make shooting shallower depth of field harder and the Sony A99 II will result in extra detail using its extra 22 Megapixels. Higher resolution will also make it easier to crop shots a little more aggressively. The more recent E-M1 III is going to have a benefit in sensor technology.