Olympus E-M1 vs Sony A7 III

The following is a in depth review of the Olympus E-M1 versus Sony A7 III, both Pro Mirrorless cameras by brands Olympus and Sony. There exists a considerable gap among the image resolutions of the E-M1 (16MP) and A7 III (24MP) and the E-M1 (Four Thirds) and A7 III (Full frame) feature totally different sensor sizes.

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The E-M1 was manufactured 5 years prior to the A7 III which is a fairly large difference as far as camera technology is concerned. Both of these cameras come with the identical body type (SLR-style mirrorless).

Before delving in to a in depth comparison, below is a concise introduction of how the E-M1 matches up vs the A7 III with respect to portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Olympus OM-D E-M1 & Sony Alpha A7 III. The entire galleries are provided at Olympus E-M1 Gallery & Sony A7 III Gallery.

For anyone who is intending to travel with your camera, you'll need to take into account its weight and size. The Olympus E-M1 features exterior measurements of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") with a weight of 497 grams (1.10 lbs) while the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") with a weight of 650 grams (1.43 lbs).

Examine the Olympus E-M1 versus Sony A7 III in our brand new Camera plus Lens Size Comparison Tool.

Remember, the weight of an ILC will change based on the lens you have chosen during that time. Below is the front view overall size comparison of the E-M1 vs the A7 III.

Taking into account dimensions and weight, the portability score of the E-M1 and A7 III is 71 and 63 respectively.

Sometimes, it's tough to visualise the gap in sensor dimensions simply by checking out specifications. The picture below might provide you a better sense of the sensor sizing in the E-M1 and A7 III.

Plainly, each of the cameras have got different megapixel count and different sensor dimensions. The E-M1 due to its smaller sensor will make shooting shallower depth of field tougher and the Sony A7 III will show extra detail due to its extra 8 Megapixels. Greater resolution will allow you to crop pics much more aggressively. The more aged E-M1 will be disadvantaged with regard to sensor technology.