Olympus E-M1 II vs Sony A7

Its time to look more closely at the Olympus E-M1 II versus Sony A7, both Pro Mirrorless digital cameras by companies Olympus and Sony. The image resolution of the E-M1 II (20MP) and the A7 (24MP) is fairly well matched but the E-M1 II (Four Thirds) and A7 (Full frame) provide different sensor dimensions.

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The E-M1 II was released 2 years later than the A7 and that is quite a serious gap as far as tech is concerned. Each of the cameras have the same body design (SLR-style mirrorless).

Before getting straight to a more detailed comparison, here is a simple synopsis of how the E-M1 II scores vs the A7 with regards to portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Olympus OM-D E-M1 Mark II and Sony Alpha A7. The complete galleries are viewable at Olympus E-M1 II Gallery and Sony A7 Gallery.

When you are going to carry your camera regularly, you will need to take into account its weight and dimensions. The Olympus E-M1 II comes with exterior dimensions of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") and a weight of 574 grams (1.27 lbs) and the Sony A7 has dimensions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") accompanied by a weight of 474 grams (1.04 lbs).

Analyze the Olympus E-M1 II versus Sony A7 in the latest Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are using at that time. Below is a front view scale comparison of the E-M1 II and the A7.

Looking at size and weight, the portability rating of the E-M1 II and A7 is 68 and 78 respectively.

Oftentimes, it's tough to picture the gap between sensor sizing simply by looking at a spec sheet. The graphic underneath may provide you a clearer sense of the sensor dimensions in the E-M1 II and A7.

Clearly, both of the cameras provide different megapixel count and different sensor sizing. The E-M1 II due to its tinier sensor is going to make shooting shallower depth of field more challenging and the Sony A7 will give greater detail as a result of its extra 4 Megapixels. Greater resolution will enable you to crop pics more aggressively. The more modern E-M1 II provides an advantage in sensor technology.