Olympus E-M5 vs Sony A7

On this page, we are analyzing the Olympus E-M5 versus Sony A7, former is a Advanced Mirrorless while the other is a Pro Mirrorless by competitors Olympus and Sony. There exists a sizable gap among the resolutions of the E-M5 (16MP) and A7 (24MP) and the E-M5 (Four Thirds) and A7 (Full frame) have different sensor sizing.

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The E-M5 was brought out 21 months prior to the A7 making them a generation away from one another. Each of these cameras have the same body design (SLR-style mirrorless).

Before going into a detailed comparison, here is a concise summation of how the E-M5 scores versus the A7 with regards to portability, imaging, features and an overall mark.

Following is a sample of the gallery pictures for Olympus OM-D E-M5 & Sony Alpha A7. The entire galleries are viewable at Olympus E-M5 Gallery & Sony A7 Gallery.

For those who are going to travel with your camera, you have to factor in its weight and dimensions. The Olympus E-M5 has physical dimensions of 122mm x 89mm x 43mm (4.8" x 3.5" x 1.7") and a weight of 425 grams (0.94 lbs) and the Sony A7 has dimensions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") having a weight of 474 grams (1.04 lbs).

Take a look at the Olympus E-M5 versus Sony A7 in our newest Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ dependant on the lens you choose at that time. Underneath is a front view over all size comparison of the E-M5 vs the A7.

Looking at dimensions and weight, the portability rating of the E-M5 and A7 is 81 and 78 respectively.

Sometimes, it can be difficult to imagine the gap in sensor dimensions purely by going through specifications. The picture underneath should provide you a clearer sense of the sensor sizes in the E-M5 and A7.

To sum up, both the cameras have different megapixels and different sensor dimensions. The E-M5 due to its smaller sensor is going to make achieving shallow DOF harder and the Sony A7 will produce more detail having its extra 8MP. Greater resolution will also let you crop pics a bit more aggressively. The more aged E-M5 will be disadvantaged when it comes to sensor technology.