Olympus E-M10 IV vs Sony A7 III

Here, we are reviewing the Olympus E-M10 IV and Sony A7 III, one is a Entry-Level Mirrorless and the other is a Pro Mirrorless by rivals Olympus and Sony. The image resolution of the E-M10 IV (20MP) and the A7 III (24MP) is very similar but the E-M10 IV (Four Thirds) and A7 III (Full frame) provide totally different sensor dimensions.

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The E-M10 IV was released 2 years after the A7 III which is quite a big gap as far as technology is concerned. Each of the cameras feature the same body design (SLR-style mirrorless).

Before diving right into a step-by-step comparison, here is a quick summation of how the E-M10 IV scores versus the A7 III when it comes to portability, imaging, features and an overall score.

The following is a sample of the gallery pics for Olympus OM-D E-M10 IV and Sony Alpha A7 III. The complete galleries are provided at Olympus E-M10 IV Gallery and Sony A7 III Gallery.

In case you're going to carry around your camera regularly, you need to factor in its weight and volume. The Olympus E-M10 IV comes with 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) and the Sony A7 III has sizing of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") and a weight of 650 grams (1.43 lbs).

Check the Olympus E-M10 IV and Sony A7 III in the new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ based on the lens you are utilizing at that moment. Underneath is a front view sizing comparison of the E-M10 IV and the A7 III.

Using dimensions and weight, the portability grade of the E-M10 IV and A7 III is 81 and 63 respectively.

Sometimes, it can be difficult to visualise the contrast between sensor sizes just by reading specifications. The image underneath should offer you a better sense of the sensor dimensions in the E-M10 IV and A7 III.

Plainly, the 2 cameras feature different megapixel count and different sensor sizes. The E-M10 IV because of its tinier sensor will make getting shallow DOF more difficult and the Sony A7 III will offer you greater detail as a result of its extra 4MP. Greater resolution will enable you to crop photos way more aggressively. The more modern E-M10 IV is going to have an advantage in sensor innovation.