Olympus E-M10 III vs Sony RX100 IV

Here is a extended review of the Olympus E-M10 III and Sony RX100 IV, former being a Entry-Level Mirrorless while the latter is a Large Sensor Compact by manufacturers Olympus and Sony. The image resolution of the E-M10 III (16MP) and the RX100 IV (20MP) is relatively well matched but the E-M10 III (Four Thirds) and RX100 IV (1") have totally different sensor sizing.

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The E-M10 III was brought out 2 years later than the RX100 IV and that is quite a significant difference as far as tech is concerned. Both the cameras feature different body design with the Olympus E-M10 III being a SLR-style mirrorless camera and the Sony RX100 IV being a Large Sensor Compact camera.

Before diving straight to a in depth comparison, here is a brief view of how the E-M10 III scores versus the RX100 IV in regards to portability, imaging, features and an overall rating.

Following is a preview of the gallery photos for Olympus OM-D E-M10 Mark III & Sony Cyber-shot DSC-RX100 IV. The entire galleries are provided at Olympus E-M10 III Gallery & Sony RX100 IV Gallery.

In case you're going to carry your camera often, you have to factor its weight and measurements. The Olympus E-M10 III has external dimensions of 122mm x 84mm x 50mm (4.8" x 3.3" x 2.0") with a weight of 410 grams (0.90 lbs) while the Sony RX100 IV has proportions of 102mm x 58mm x 41mm (4.0" x 2.3" x 1.6") with a weight of 298 grams (0.66 lbs).

Compare the Olympus E-M10 III and Sony RX100 IV in our completely new Camera & Lens Size Comparison Tool.

Don't forget, the weight of an ILC will differ dependant on the lens you are employing at that time. Below is a front view size comparison of the E-M10 III vs the RX100 IV.

Considering size and weight, the portability score of the E-M10 III and RX100 IV is 80 and 89 respectively.

Usually, its tough to envision the difference between sensor sizing purely by checking technical specs. The graphic below will give you a clearer sense of the sensor dimensions in the E-M10 III and RX100 IV.

As you have seen, the two cameras come with different megapixels and different sensor sizing. The E-M10 III because of its bigger sensor will make achieving shallow depth of field easier and the Sony RX100 IV will give more detail having its extra 4 Megapixels. Higher resolution will also make it easier to crop pictures a good deal more aggressively. The more modern E-M10 III will have an edge in sensor tech.