Olympus E-M1 III vs Pentax RZ18

On this page, we will be evaluating the Olympus E-M1 III vs Pentax RZ18, one is a Pro Mirrorless and the latter is a Small Sensor Superzoom by companies Olympus and Pentax. There exists a huge gap among the image resolutions of the E-M1 III (20MP) and RZ18 (16MP) and the E-M1 III (Four Thirds) and RZ18 (1/2.3") posses different sensor measurements.

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The E-M1 III was introduced 8 years after the RZ18 which is a fairly significant gap as far as camera technology is concerned. The two cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax RZ18 being a Compact camera.

Before we go right into a in depth comparison, here is a brief overview of how the E-M1 III matches up against the RZ18 when considering portability, imaging, features and an overall mark.

Below is a preview of the gallery images for Olympus OM-D E-M1 Mark III and Pentax Optio RZ18. The whole galleries are viewable at Olympus E-M1 III Gallery and Pentax RZ18 Gallery.

For anyone who is looking to travel with your camera regularly, you need to take into account its weight and measurements. The Olympus E-M1 III has physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") and a weight of 580 grams (1.28 lbs) whilst the Pentax RZ18 has proportions of 97mm x 61mm x 33mm (3.8" x 2.4" x 1.3") with a weight of 178 grams (0.39 lbs).

Take a look at the Olympus E-M1 III vs Pentax RZ18 in the new Camera with Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilizing at the time. Here is a front view dimensions comparison of the E-M1 III versus the RZ18.

Factoring in dimensions and weight, the portability score of the E-M1 III and RZ18 is 67 and 92 respectively.

More often than not, it is very hard to visualize the difference in sensor dimensions only by viewing specifications. The picture below will offer you a clearer sense of the sensor sizes in the E-M1 III and RZ18.

Plainly, both of those cameras have different megapixels and different sensor dimensions. The E-M1 III using its bigger sensor is going to make shooting shallower depth of field simpler and the Olympus E-M1 III will result in more detail using its extra 4MP. Higher resolution will allow you to crop photographs a bit more aggressively. The younger E-M1 III should have an edge when it comes to sensor tech.