Olympus E-M1 III vs Sony G3

Below is a detailed review of the Olympus E-M1 III and Sony G3, former being a Pro Mirrorless while the latter is a Small Sensor Compact by rivals Olympus and Sony. There is a noticeable difference among the resolutions of the E-M1 III (20MP) and G3 (10MP) and the E-M1 III (Four Thirds) and G3 (1/2.3") enjoy different sensor sizes.

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The E-M1 III was unveiled 11 years later than the G3 and that is a fairly sizable difference as far as camera tech is concerned. Each of these cameras come with different body type with the Olympus E-M1 III being a SLR-style mirrorless camera and the Sony G3 being a Compact camera.

Before going straight into a complete comparison, below is a quick overview of how the E-M1 III matches up vs the G3 when considering portability, imaging, features and an overall grade.

This is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Sony Cyber-shot DSC-G3. The full galleries are viewable at Olympus E-M1 III Gallery & Sony G3 Gallery.

For those who are planning to lug around your camera, you'll need to factor in its weight and dimensions. The Olympus E-M1 III features outside dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) and the Sony G3 has dimensions of 97mm x 59mm x 22mm (3.8" x 2.3" x 0.9") with a weight of 185 grams (0.41 lbs).

Look at the Olympus E-M1 III and Sony G3 in our completely new Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will change depending on the lens you are working with at the time. The following is the front view physical size comparison of the E-M1 III versus the G3.

Taking into consideration size and weight, the portability grade of the E-M1 III and G3 is 67 and 94 respectively.

Oftentimes, its hard to visualize the contrast in sensor measurements merely by viewing technical specs. The photograph underneath will help offer you a better sense of the sensor sizes in the E-M1 III and G3.

As you have seen, both of these cameras have got different megapixels and different sensor measurements. The E-M1 III having a bigger sensor is going to make shooting shallow DOF easier and the Olympus E-M1 III will render more detail having an extra 10 Megapixels. Higher resolution will also let you crop photographs much more aggressively. The fresher E-M1 III provides an edge in sensor tech.