Olympus E-M10 IV vs Sony A99

Lets look more closely at the Olympus E-M10 IV vs Sony A99, one is a Entry-Level Mirrorless and the other is a Advanced DSLR by companies Olympus and Sony. The sensor resolution of the E-M10 IV (20MP) and the A99 (24MP) is fairly well matched but the E-M10 IV (Four Thirds) and A99 (Full frame) have totally different sensor sizing.

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The E-M10 IV was brought out 7 years after the A99 which is quite a big gap as far as tech is concerned. Both of the cameras have different body design with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Sony A99 being a Mid-size SLR camera.

Before diving into a detailed comparison, here is a simple summation of how the E-M10 IV scores against the A99 with regards to portability, imaging, features and an overall mark.

This is a sample of the gallery pictures for Olympus OM-D E-M10 IV and Sony SLT-A99. The entire galleries are available at Olympus E-M10 IV Gallery and Sony A99 Gallery.

In case you're aiming to travel with your camera frequently, you'll need to think about its weight and proportions. The Olympus E-M10 IV enjoys outside dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") and a weight of 383 grams (0.84 lbs) and the Sony A99 has measurements of 147mm x 111mm x 78mm (5.8" x 4.4" x 3.1") with a weight of 812 grams (1.79 lbs).

Check the Olympus E-M10 IV vs Sony A99 in the new Camera with Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary dependant on the lens you use during that time. Below is a front view scale comparison of the E-M10 IV compared to the A99.

Looking at size and weight, the portability grade of the E-M10 IV and A99 is 81 and 57 respectively.

Often, it can be tough to see the difference between sensor dimensions purely by reading through technical specs. The picture below might provide you a clearer sense of the sensor sizes in the E-M10 IV and A99.

As you have seen, each of these cameras provide different resolutions and different sensor dimensions. The E-M10 IV because of its tinier sensor will make achieving shallower depth of field tougher and the Sony A99 will give greater detail having its extra 4MP. Greater resolution will help you crop photos more aggressively. The fresher E-M10 IV is going to have an advantage with regard to sensor technology.