Olympus E-PM1 vs Sony A900

Following is a extended assessment of the Olympus E-PM1 vs Sony A900, one is a Entry-Level Mirrorless and the other is a Advanced DSLR by competitors Olympus and Sony. There is a crucial difference among the resolutions of the E-PM1 (12MP) and A900 (25MP) and the E-PM1 (Four Thirds) and A900 (Full frame) feature totally different sensor dimensions.

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The E-PM1 was revealed 3 years after the A900 which is a fairly serious gap as far as camera tech is concerned. Both of the cameras offer different body type with the Olympus E-PM1 being a Rangefinder-style mirrorless camera and the Sony A900 being a Mid-size SLR camera.

Before going in to a comprehensive comparison, below is a brief view of how the E-PM1 grades versus the A900 in terms of portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Olympus PEN E-PM1 and Sony Alpha DSLR-A900. The full galleries are provided at Olympus E-PM1 Gallery and Sony A900 Gallery.

When you are intending to carry around your camera frequently, you will need to factor in its weight and proportions. The Olympus E-PM1 comes with external dimensions of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") with a weight of 265 grams (0.58 lbs) whilst the Sony A900 has measurements of 156mm x 117mm x 82mm (6.1" x 4.6" x 3.2") having a weight of 895 grams (1.97 lbs).

Compare the Olympus E-PM1 vs Sony A900 in the all new Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at that time. Below is the front view over all size comparison of the E-PM1 against the A900.

Looking at size and weight, the portability score of the E-PM1 and A900 is 89 and 54 respectively.

In many cases, it is hard to see the contrast in sensor sizes only by checking out specs. The pic underneath should provide you a more clear sense of the sensor sizes in the E-PM1 and A900.

All in all, both of those cameras offer different resolutions and different sensor sizes. The E-PM1 using its smaller sensor will make achieving bokeh more challenging and the Sony A900 will provide greater detail because of its extra 13 Megapixels. Greater resolution will allow you to crop images a little more aggressively. The fresher E-PM1 will have an edge in sensor technology.