Olympus E-3 vs Sony A7

Following is a complete comparison of the Olympus E-3 versus Sony A7, former is a Advanced DSLR while the latter is a Pro Mirrorless by companies Olympus and Sony. There is a large difference among the resolutions of the E-3 (10MP) and A7 (24MP) and the E-3 (Four Thirds) and A7 (Full frame) boast different sensor sizes.

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The E-3 was introduced 7 years prior to the A7 which is a fairly serious difference as far as camera tech is concerned. Each of these cameras feature different body design with the Olympus E-3 being a Mid-size SLR camera and the Sony A7 being a SLR-style mirrorless camera.

Before getting right into a complete comparison, here is a brief introduction of how the E-3 matches up vs the A7 in regards to portability, imaging, features and an overall score.

This is a preview of the gallery photos for Olympus E-3 & Sony Alpha A7. The whole galleries are available at Olympus E-3 Gallery & Sony A7 Gallery.

In case you're planning to carry around your camera frequently, you will have to think about its weight and volume. The Olympus E-3 has got outside measurements of 142mm x 116mm x 75mm (5.6" x 4.6" x 3.0") and a weight of 890 grams (1.96 lbs) while the Sony A7 has sizing of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") accompanied by a weight of 474 grams (1.04 lbs).

Look at the Olympus E-3 versus Sony A7 in our brand new Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ based on the lens you choose at that time. Here is a front view overall size comparison of the E-3 vs the A7.

Taking into account size and weight, the portability grade of the E-3 and A7 is 56 and 78 respectively.

Often, it can be hard to picture the gap in sensor sizes purely by going through a spec sheet. The image here should provide you a better sense of the sensor sizing in the E-3 and A7.

Clearly, both of these cameras come with different megapixel count and different sensor sizes. The E-3 having a smaller sensor is going to make shooting shallow depth of field tougher and the Sony A7 will provide extra detail using its extra 14 Megapixels. Higher resolution will also help you crop shots a good deal more aggressively. The more aged E-3 will be behind with regard to sensor innovation.