Olympus E-M1 III vs Panasonic ZS100

Here, we are comparing the Olympus E-M1 III and Panasonic ZS100, former being a Pro Mirrorless while the other is a Large Sensor Compact by manufacturers Olympus and Panasonic. The sensor resolution of the E-M1 III (20MP) and the ZS100 (20MP) is fairly well matched but the E-M1 III (Four Thirds) and ZS100 (1") posses totally different sensor size.

Meta to Introduce 'AI-Generated' Labels for Media starting next month

The E-M1 III was manufactured 4 years later than the ZS100 and that is quite a sizable difference as far as technology is concerned. Each of the cameras feature different body design with the Olympus E-M1 III being a SLR-style mirrorless camera and the Panasonic ZS100 being a Large Sensor Compact camera.

Before getting straight to a complete comparison, here is a short overview of how the E-M1 III grades versus the ZS100 in terms of portability, imaging, features and an overall rating.

Here is a sample of the gallery pictures for Olympus OM-D E-M1 Mark III & Panasonic Lumix DMC-ZS100. The entire galleries are available at Olympus E-M1 III Gallery & Panasonic ZS100 Gallery.

For anyone who is intending to carry your camera regularly, you are going to need to factor its weight and measurements. The Olympus E-M1 III has external measurements of 134mm x 91mm x 69mm (5.3" x 3.6" x 2.7") having a weight of 580 grams (1.28 lbs) and the Panasonic ZS100 has proportions of 111mm x 65mm x 44mm (4.4" x 2.6" x 1.7") with a weight of 312 grams (0.69 lbs).

Check out the Olympus E-M1 III and Panasonic ZS100 in our brand new Camera & Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will differ depending on the lens you have at that time. Following is a front view measurement comparison of the E-M1 III and the ZS100.

Considering dimensions and weight, the portability rating of the E-M1 III and ZS100 is 67 and 87 respectively.

Normally, it's tough to visualise the difference between sensor sizing only by looking at a spec sheet. The graphic below should give you a much better sense of the sensor measurements in the E-M1 III and ZS100.

As you can see, both the cameras feature the identical megapixel count but not the same sensor sizing. The E-M1 III provides the larger sensor which is going to make getting shallower depth of field easier. The more recent E-M1 III is going to have a benefit when it comes to sensor tech.