Olympus E-M10 vs Sony A99

On this page, we will be comparing the Olympus E-M10 and Sony A99, former is a Entry-Level Mirrorless while the latter is a Advanced DSLR by rivals Olympus and Sony. There is a noticeable difference among the resolutions of the E-M10 (16MP) and A99 (24MP) and the E-M10 (Four Thirds) and A99 (Full frame) boast different sensor measurements.

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The E-M10 was released 16 months after the A99 which makes them a generation away from each other. Both the cameras have different body design with the Olympus E-M10 being a SLR-style mirrorless camera and the Sony A99 being a Mid-size SLR camera.

Before getting right into a step-by-step comparison, here is a short summary of how the E-M10 scores vs the A99 with respect to portability, imaging, features and an overall mark.

Here is a preview of the gallery photos for Olympus OM-D E-M10 & Sony SLT-A99. The complete galleries are provided at Olympus E-M10 Gallery & Sony A99 Gallery.

In case you're looking to travel with your camera regularly, you will have to take into account its weight and size. The Olympus E-M10 comes with physical dimensions of 119mm x 82mm x 46mm (4.7" x 3.2" x 1.8") along with a weight of 396 grams (0.87 lbs) whilst the Sony A99 has specifications of 147mm x 111mm x 78mm (5.8" x 4.4" x 3.1") having a weight of 812 grams (1.79 lbs).

Analyze the Olympus E-M10 and Sony A99 in our completely new Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will differ dependant on the lens you have during that time. Below is a front view physical size comparison of the E-M10 compared to the A99.

Factoring in size and weight, the portability rating of the E-M10 and A99 is 82 and 57 respectively.

Often, it's hard to visualize the gap in sensor dimensions purely by looking through specs. The pic below will help offer you a greater sense of the sensor sizes in the E-M10 and A99.

As you can plainly see, each of these cameras have different megapixel count and different sensor dimensions. The E-M10 because of its smaller sensor is going to make shooting shallower depth of field harder and the Sony A99 will render extra detail as a result of its extra 8 Megapixels. Higher resolution will allow you to crop shots a bit more aggressively. The younger E-M10 should have an advantage when it comes to sensor innovation.