Olympus E-M1 vs Sony A58

Let's look a bit more in depth at the Olympus E-M1 versus Sony A58, one being a Pro Mirrorless and the latter is a Entry-Level DSLR by brands Olympus and Sony. The image resolution of the E-M1 (16MP) and the A58 (20MP) is relatively close but the E-M1 (Four Thirds) and A58 (APS-C) have totally different sensor measurements.

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The E-M1 was brought out at a similar time to the A58 and they are both of a similar generation. Both cameras feature different body design with the Olympus E-M1 being a SLR-style mirrorless camera and the Sony A58 being a Compact SLR camera.

Before going straight to a thorough comparison, here is a short overview of how the E-M1 matches up against the A58 with regard to portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Olympus OM-D E-M1 and Sony SLT-A58. The entire galleries are viewable at Olympus E-M1 Gallery and Sony A58 Gallery.

If you are planning to lug around your camera regularly, you will have to factor in its weight and size. The Olympus E-M1 enjoys external dimensions of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") with a weight of 497 grams (1.10 lbs) while the Sony A58 has specifications of 129mm x 95mm x 78mm (5.1" x 3.7" x 3.1") accompanied by a weight of 492 grams (1.08 lbs).

Analyze the Olympus E-M1 versus Sony A58 in the latest Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will differ based on the lens you are working with at that moment. Underneath is a front view size comparison of the E-M1 against the A58.

Taking into consideration size and weight, the portability score of the E-M1 and A58 is 71 and 68 respectively.

Often, it is very hard to visualise the gap in sensor measurements simply by looking through technical specs. The graphic below may give you a stronger sense of the sensor sizes in the E-M1 and A58.

As you can tell, both of these cameras come with different megapixels and different sensor measurements. The E-M1 because of its smaller sensor will make getting shallower DOF harder and the Sony A58 will provide you with greater detail having its extra 4 Megapixels. Higher resolution will also enable you to crop pictures a good deal more aggressively.