Olympus E-M10 IV vs Sony A55

In this article, we are comparing the Olympus E-M10 IV versus Sony A55, former being a Entry-Level Mirrorless while the other is a Entry-Level DSLR by rivals Olympus and Sony. There is a noticeable difference among the image resolutions of the E-M10 IV (20MP) and A55 (16MP) and the E-M10 IV (Four Thirds) and A55 (APS-C) enjoy different sensor sizes.

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The E-M10 IV was launched 10 years later than the A55 and that is a fairly sizable difference as far as camera tech is concerned. Both cameras offer different body type with the Olympus E-M10 IV being a SLR-style mirrorless camera and the Sony A55 being a Compact SLR camera.

Before going through a complete comparison, below is a brief synopsis of how the E-M10 IV scores against the A55 in terms of portability, imaging, features and an overall rating.

Following is a sample of the gallery pics for Olympus OM-D E-M10 IV & Sony SLT-A55. The complete galleries are provided at Olympus E-M10 IV Gallery & Sony A55 Gallery.

For anyone who is looking to carry your camera frequently, you need to factor its weight and size. The Olympus E-M10 IV has got external dimensions of 122mm x 84mm x 49mm (4.8" x 3.3" x 1.9") with a weight of 383 grams (0.84 lbs) while the Sony A55 has specifications of 124mm x 92mm x 85mm (4.9" x 3.6" x 3.3") accompanied by a weight of 500 grams (1.10 lbs).

Check out the Olympus E-M10 IV versus Sony A55 in our completely new Camera plus Lens Size Comparison Tool.

Take into account, the weight of an ILC will vary dependant on the lens you are employing at that time. Below is the front view size comparison of the E-M10 IV versus the A55.

Taking into consideration size and weight, the portability rating of the E-M10 IV and A55 is 81 and 67 respectively.

Often, it's difficult to visualize the contrast in sensor sizing just by researching technical specs. The graphic below will help provide you a stronger sense of the sensor dimensions in the E-M10 IV and A55.

As you can tell, the 2 cameras offer different megapixel count and different sensor sizing. The E-M10 IV because of its smaller sensor is going to make getting bokeh tougher and the Olympus E-M10 IV will render greater detail utilizing its extra 4MP. Greater resolution will also enable you to crop photos a little more aggressively. The fresher E-M10 IV should have an advantage with regard to sensor technology.