Olympus E-PM1 vs Sony A9

Lets look more in depth at the Olympus E-PM1 and Sony A9, former being a Entry-Level Mirrorless while the latter is a Pro Mirrorless by brands Olympus and Sony. There is a large difference among the image resolutions of the E-PM1 (12MP) and A9 (24MP) and the E-PM1 (Four Thirds) and A9 (Full frame) have totally different sensor sizes.

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The E-PM1 was brought out 6 years earlier than the A9 and that is a fairly serious difference as far as camera tech is concerned. The two cameras feature different body design with the Olympus E-PM1 being a Rangefinder-style mirrorless camera and the Sony A9 being a SLR-style mirrorless camera.

Before going into a in depth comparison, here is a brief synopsis of how the E-PM1 scores vs the A9 when it comes to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Olympus PEN E-PM1 & Sony Alpha A9. The entire galleries are available at Olympus E-PM1 Gallery & Sony A9 Gallery.

For those who are aiming to carry your camera regularly, you should factor in its weight and volume. The Olympus E-PM1 comes with exterior dimensions of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") accompanied by a weight of 265 grams (0.58 lbs) while the Sony A9 has sizing of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") with a weight of 673 grams (1.48 lbs).

Analyze the Olympus E-PM1 and Sony A9 in our brand new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will differ based on the lens you have attached at the time. Here is a front view measurements comparison of the E-PM1 against the A9.

Using size and weight, the portability grade of the E-PM1 and A9 is 89 and 65 respectively.

In many cases, its tough to see the difference in sensor sizing purely by viewing specifications. The visual below will help give you a much better sense of the sensor sizes in the E-PM1 and A9.

Plainly, the two cameras come with different resolutions and different sensor sizing. The E-PM1 featuring a smaller sensor will make getting shallower DOF tougher and the Sony A9 will render more detail having its extra 12MP. Higher resolution can also enable you to crop photographs a good deal more aggressively. The older E-PM1 will be disadvantaged when it comes to sensor technology.