Olympus E-M1 II vs Sony A100

Lets look a little more closely at the Olympus E-M1 II and Sony A100, former being a Pro Mirrorless while the other is a Entry-Level DSLR by competitors Olympus and Sony. There is a substantial difference between the sensor resolutions of the E-M1 II (20MP) and A100 (10MP) and the E-M1 II (Four Thirds) and A100 (APS-C) feature totally different sensor sizes.

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The E-M1 II was brought out 10 years later than the A100 and that is quite a big difference as far as tech is concerned. Both of these cameras come with different body type with the Olympus E-M1 II being a SLR-style mirrorless camera and the Sony A100 being a Compact SLR camera.

Before we go in to a more detailed comparison, below is a simple view of how the E-M1 II matches up against the A100 in terms of portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Olympus OM-D E-M1 Mark II & Sony Alpha DSLR-A100. The entire galleries are viewable at Olympus E-M1 II Gallery & Sony A100 Gallery.

In case you're planning to carry your camera often, you will want to factor in its weight and volume. The Olympus E-M1 II offers outer dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") accompanied by a weight of 574 grams (1.27 lbs) whilst the Sony A100 has sizing of 133mm x 95mm x 71mm (5.2" x 3.7" x 2.8") having a weight of 638 grams (1.41 lbs).

Check out the Olympus E-M1 II and Sony A100 in our completely new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will change based on the lens you have attached at that time. Below is the front view dimensions comparison of the E-M1 II vs the A100.

Taking into consideration size and weight, the portability score of the E-M1 II and A100 is 68 and 64 respectively.

Usually, it's difficult to see the difference between sensor sizing only by going over a spec sheet. The graphic here will help offer you a better sense of the sensor dimensions in the E-M1 II and A100.

Clearly, both cameras have got different resolutions and different sensor sizing. The E-M1 II due to its tinier sensor will make achieving shallower depth of field harder and the Olympus E-M1 II will offer extra detail having its extra 10 Megapixels. Greater resolution can also make it easier to crop pics much more aggressively. The fresher E-M1 II is going to have a benefit in sensor technology.