Olympus E-M5 III vs Panasonic ZS25

In this write-up, we will be reviewing the Olympus E-M5 III and Panasonic ZS25, one being a Advanced Mirrorless and the latter is a Small Sensor Superzoom by rivals Olympus and Panasonic. There is a huge difference between the image resolutions of the E-M5 III (20MP) and ZS25 (16MP) and the E-M5 III (Four Thirds) and ZS25 (1/2.3") use different sensor dimensions.

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The E-M5 III was brought out 6 years later than the ZS25 and that is quite a significant gap as far as tech is concerned. The two cameras offer different body type with the Olympus E-M5 III being a SLR-style mirrorless camera and the Panasonic ZS25 being a Compact camera.

Before diving in to a more detailed comparison, below is a brief highlight of how the E-M5 III grades against the ZS25 when it comes to portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Olympus OM-D E-M5 III and Panasonic Lumix DMC-ZS25. The entire galleries are available at Olympus E-M5 III Gallery and Panasonic ZS25 Gallery.

In case you're intending to carry your camera regularly, you need to think about its weight and proportions. The Olympus E-M5 III enjoys exterior dimensions of 125mm x 85mm x 50mm (4.9" x 3.3" x 2.0") having a weight of 414 grams (0.91 lbs) whilst the Panasonic ZS25 has measurements of 105mm x 59mm x 28mm (4.1" x 2.3" x 1.1") accompanied by a weight of 193 grams (0.43 lbs).

Look at the Olympus E-M5 III and Panasonic ZS25 in the latest Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change depending on the lens you are utilizing at the time. Underneath is the front view size comparison of the E-M5 III against the ZS25.

Looking at size and weight, the portability score of the E-M5 III and ZS25 is 80 and 93 respectively.

Often, its tough to imagine the difference between sensor sizing only by reading through specs. The photograph below may give you a better sense of the sensor dimensions in the E-M5 III and ZS25.

As you can plainly see, the 2 cameras offer different megapixels and different sensor sizing. The E-M5 III because of its bigger sensor is going to make shooting shallower depth of field easier and the Olympus E-M5 III will give you extra detail having its extra 4 Megapixels. Higher resolution will enable you to crop shots a little more aggressively. The more modern E-M5 III should have an edge with regard to sensor technology.