Olympus E-M10 vs Sony A7S III

Here is a in depth comparison of the Olympus E-M10 versus Sony A7S III, former being a Entry-Level Mirrorless while the other is a Pro Mirrorless by manufacturers Olympus and Sony. There exists a sizable gap between the resolutions of the E-M10 (16MP) and A7S III (12MP) and the E-M10 (Four Thirds) and A7S III (Full frame) possess totally different sensor sizes.

Photography Glossary

The E-M10 was announced 7 years prior to the A7S III and that is quite a significant difference as far as technology is concerned. Both of the cameras offer the identical body type (SLR-style mirrorless).

Before we go through a full comparison, below is a concise view of how the E-M10 scores against the A7S III in the way of portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Olympus OM-D E-M10 & Sony Alpha A7S III. The whole galleries are viewable at Olympus E-M10 Gallery & Sony A7S III Gallery.

When you are aiming to carry your camera often, you should consider its weight and size. The Olympus E-M10 features physical measurements of 119mm x 82mm x 46mm (4.7" x 3.2" x 1.8") with a weight of 396 grams (0.87 lbs) and the Sony A7S III has specifications of 129mm x 97mm x 81mm (5.1" x 3.8" x 3.2") having a weight of 699 grams (1.54 lbs).

Analyze the Olympus E-M10 versus Sony A7S III in our completely new Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change dependant on the lens you are utilizing at the time. Following is the front view measurements comparison of the E-M10 and the A7S III.

Using dimensions and weight, the portability grade of the E-M10 and A7S III is 82 and 61 respectively.

Typically, it's tough to visualise the difference between sensor sizing purely by reviewing technical specs. The photograph underneath will help offer you a clearer sense of the sensor sizing in the E-M10 and A7S III.

As you can tell, both of those cameras enjoy different megapixel count and different sensor sizing. The E-M10 with its tinier sensor will make getting shallower DOF more difficult and the Olympus E-M10 will deliver extra detail with its extra 4MP. Greater resolution can also allow you to crop images far more aggressively. The older E-M10 is going to be behind when it comes to sensor tech.