Olympus E-M1 III vs Pentax WG-2 GPS

Here is a complete comparison of the Olympus E-M1 III versus Pentax WG-2 GPS, one being a Pro Mirrorless and the other is a Waterproof by rivals Olympus and Pentax. There is a sizeable difference between the sensor resolutions of the E-M1 III (20MP) and WG-2 GPS (16MP) and the E-M1 III (Four Thirds) and WG-2 GPS (1/2.3") have different sensor dimensions.

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The E-M1 III was manufactured 8 years later than the WG-2 GPS and that is quite a large gap as far as tech is concerned. Both the cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Pentax WG-2 GPS being a Compact camera.

Before getting right into a step-by-step comparison, here is a quick synopsis of how the E-M1 III grades versus the WG-2 GPS in regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pictures for Olympus OM-D E-M1 Mark III and Pentax Optio WG-2 GPS. The entire galleries are available at Olympus E-M1 III Gallery and Pentax WG-2 GPS Gallery.

In case you're intending to carry your camera, you will want to factor its weight and size. The Olympus E-M1 III features external measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") accompanied by a weight of 580 grams (1.28 lbs) and the Pentax WG-2 GPS has specifications of 122mm x 61mm x 30mm (4.8" x 2.4" x 1.2") accompanied by a weight of 198 grams (0.44 lbs).

Compare the Olympus E-M1 III versus Pentax WG-2 GPS in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary dependant on the lens you have chosen at that time. Underneath is a front view size comparison of the E-M1 III versus the WG-2 GPS.

Taking into account size and weight, the portability grade of the E-M1 III and WG-2 GPS is 67 and 91 respectively.

Generally, it's hard to picture the gap between sensor sizing just by reading through a spec sheet. The photograph underneath will help provide you a much better sense of the sensor measurements in the E-M1 III and WG-2 GPS.

As you can see, both cameras have different resolutions and different sensor sizing. The E-M1 III featuring a larger sensor is going to make shooting shallow depth of field simpler and the Olympus E-M1 III will resolve extra detail due to its extra 4 Megapixels. Greater resolution will enable you to crop photos a bit more aggressively. The more recent E-M1 III should have a benefit in sensor tech.