Olympus E-M1 III vs Panasonic ZS25

Lets look more closely at the Olympus E-M1 III vs Panasonic ZS25, former being a Pro Mirrorless while the latter is a Small Sensor Superzoom by rivals Olympus and Panasonic. There exists a sizable gap between the resolutions of the E-M1 III (20MP) and ZS25 (16MP) and the E-M1 III (Four Thirds) and ZS25 (1/2.3") have different sensor sizing.

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The E-M1 III was unveiled 7 years later than the ZS25 and that is quite a significant difference as far as technology is concerned. Both of these cameras have different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Panasonic ZS25 being a Compact camera.

Before getting straight to a detailed comparison, here is a short synopsis of how the E-M1 III scores versus the ZS25 when it comes to portability, imaging, features and an overall rating.

Below is a preview of the gallery images for Olympus OM-D E-M1 Mark III & Panasonic Lumix DMC-ZS25. The full galleries are provided at Olympus E-M1 III Gallery & Panasonic ZS25 Gallery.

If you are going to carry your camera often, you'll have to consider its weight and volume. The Olympus E-M1 III comes with physical dimensions of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") with a weight of 580 grams (1.28 lbs) and the Panasonic ZS25 has sizing of 105mm x 59mm x 28mm (4.1" x 2.3" x 1.1") having a weight of 193 grams (0.43 lbs).

Check the Olympus E-M1 III vs Panasonic ZS25 in our completely new Camera & Lens Size Comparison Tool.

Take into account, the weight of an ILC will vary depending on the lens you are employing at the time. Following is a front view physical size comparison of the E-M1 III vs the ZS25.

Taking into consideration dimensions and weight, the portability rating of the E-M1 III and ZS25 is 67 and 93 respectively.

Sometimes, it is very difficult to picture the contrast between sensor sizing just by checking specs. The photograph underneath might give you a clearer sense of the sensor sizes in the E-M1 III and ZS25.

As you can plainly see, both of these cameras provide different megapixel count and different sensor sizing. The E-M1 III with its bigger sensor is going to make getting shallow DOF simpler and the Olympus E-M1 III will give you greater detail having an extra 4 Megapixels. Higher resolution will make it easier to crop pictures more aggressively. The newer E-M1 III provides an advantage with regard to sensor technology.