Olympus E-P2 vs Sony A900

In this write-up, we will be looking at the Olympus E-P2 and Sony A900, former is a Entry-Level Mirrorless while the latter is a Advanced DSLR by companies Olympus and Sony. There is a considerable difference between the image resolutions of the E-P2 (12MP) and A900 (25MP) and the E-P2 (Four Thirds) and A900 (Full frame) feature totally different sensor sizes.

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The E-P2 was introduced 19 months after the A900 which makes the cameras a generation away from each other. Both of the cameras offer different body type with the Olympus E-P2 being a Rangefinder-style mirrorless camera and the Sony A900 being a Mid-size SLR camera.

Before going straight into a complete comparison, below is a brief introduction of how the E-P2 matches up versus the A900 when it comes to portability, imaging, features and an overall score.

This is a preview of the gallery photos for Olympus PEN E-P2 & Sony Alpha DSLR-A900. The whole galleries are viewable at Olympus E-P2 Gallery & Sony A900 Gallery.

When you are looking to carry around your camera often, you need to factor in its weight and size. The Olympus E-P2 enjoys outer measurements of 121mm x 70mm x 36mm (4.8" x 2.8" x 1.4") having a weight of 355 grams (0.78 lbs) and the Sony A900 has specifications of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") accompanied by a weight of 895 grams (1.97 lbs).

See the Olympus E-P2 and Sony A900 in our brand new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ dependant on the lens you are utilising at that moment. Following is the front view dimension comparison of the E-P2 compared to the A900.

Taking into account size and weight, the portability rating of the E-P2 and A900 is 86 and 54 respectively.

In many cases, it's hard to visualise the difference between sensor sizes purely by checking specifications. The image below might give you a stronger sense of the sensor sizing in the E-P2 and A900.

Plainly, each of the cameras offer different megapixels and different sensor sizes. The E-P2 having a tinier sensor will make achieving shallower DOF more difficult and the Sony A900 will give you extra detail using its extra 13MP. Higher resolution will allow you to crop pictures a little more aggressively. The fresher E-P2 will have an edge in sensor innovation.