Olympus E-M1 vs Panasonic FS25

Here, we will be reviewing the Olympus E-M1 versus Panasonic FS25, one being a Pro Mirrorless and the latter is a Small Sensor Compact by rivals Olympus and Panasonic. There is a sizeable difference among the image resolutions of the E-M1 (16MP) and FS25 (12MP) and the E-M1 (Four Thirds) and FS25 (1/2.3") have totally different sensor sizing.

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The E-M1 was launched 4 years later than the FS25 and that is a fairly large gap as far as camera tech is concerned. Both of these cameras feature different body design with the Olympus E-M1 being a SLR-style mirrorless camera and the Panasonic FS25 being a Compact camera.

Before diving into a step-by-step comparison, here is a brief summation of how the E-M1 grades vs the FS25 when it comes to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Olympus OM-D E-M1 and Panasonic Lumix DMC-FS25. The complete galleries are available at Olympus E-M1 Gallery and Panasonic FS25 Gallery.

If you're planning to carry your camera frequently, you will want to consider its weight and dimensions. The Olympus E-M1 enjoys outer measurements of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") along with a weight of 497 grams (1.10 lbs) whilst the Panasonic FS25 has dimensions of 97mm x 58mm x 22mm (3.8" x 2.3" x 0.9") with a weight of 148 grams (0.33 lbs).

See the Olympus E-M1 versus Panasonic FS25 in the all new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are working with at the time. Here is a front view proportions comparison of the E-M1 versus the FS25.

Looking at size and weight, the portability grade of the E-M1 and FS25 is 71 and 95 respectively.

Usually, it is very difficult to see the gap in sensor sizing just by researching technical specs. The visual below may give you a better sense of the sensor sizing in the E-M1 and FS25.

As you can tell, both of those cameras come with different resolutions and different sensor sizing. The E-M1 due to its bigger sensor will make shooting shallow depth of field simpler and the Olympus E-M1 will provide you with greater detail utilizing its extra 4MP. Higher resolution will help you crop pictures a good deal more aggressively. The newer E-M1 is going to have an edge when it comes to sensor innovation.