Olympus E-M5 III vs Sony A7 III

Let's take a closer look at the Olympus E-M5 III and Sony A7 III, former is a Advanced Mirrorless while the latter is a Pro Mirrorless by competitors Olympus and Sony. The resolution of the E-M5 III (20MP) and the A7 III (24MP) is pretty comparable but the E-M5 III (Four Thirds) and A7 III (Full frame) offer different sensor size.

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The E-M5 III was announced 20 months after the A7 III which makes them a generation away from one another. Both cameras feature the same body design (SLR-style mirrorless).

Before getting straight to a thorough comparison, here is a simple overview of how the E-M5 III matches up versus the A7 III in regards to portability, imaging, features and an overall mark.

Here is a preview of the gallery images for Olympus OM-D E-M5 III & Sony Alpha A7 III. The whole galleries are available at Olympus E-M5 III Gallery & Sony A7 III Gallery.

If you're planning to travel with your camera regularly, you are going to need to factor in its weight and size. The Olympus E-M5 III provides outer measurements of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") along with a weight of 414 grams (0.91 lbs) and the Sony A7 III has specifications of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

Check out the Olympus E-M5 III and Sony A7 III in our completely new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ based on the lens you have at that time. The following is a front view dimension comparison of the E-M5 III compared to the A7 III.

Taking into consideration dimensions and weight, the portability score of the E-M5 III and A7 III is 80 and 63 respectively.

Typically, it is very difficult to imagine the contrast in sensor dimensions purely by going through technical specs. The pic here may offer you a greater sense of the sensor sizing in the E-M5 III and A7 III.

As you can tell, both of those cameras feature different megapixel count and different sensor dimensions. The E-M5 III using its smaller sensor is going to make shooting shallower depth of field tougher and the Sony A7 III will provide greater detail with its extra 4 Megapixels. Higher resolution will also enable you to crop photographs way more aggressively. The younger E-M5 III provides a benefit when it comes to sensor tech.