Olympus E-M1 vs Pentax K-S2

Let's take a closer look at the Olympus E-M1 versus Pentax K-S2, one is a Pro Mirrorless and the other is a Entry-Level DSLR by companies Olympus and Pentax. The sensor resolution of the E-M1 (16MP) and the K-S2 (20MP) is very well matched but the E-M1 (Four Thirds) and K-S2 (APS-C) enjoy different sensor sizing.

Photography Glossary

The E-M1 was introduced 15 months before the K-S2 making the cameras a generation away from one another. Both of the cameras come with different body type with the Olympus E-M1 being a SLR-style mirrorless camera and the Pentax K-S2 being a Compact SLR camera.

Before diving through a thorough comparison, below is a brief summary of how the E-M1 scores versus the K-S2 in relation to portability, imaging, features and an overall mark.

Here is a sample of the gallery pics for Olympus OM-D E-M1 and Pentax K-S2. The whole galleries are provided at Olympus E-M1 Gallery and Pentax K-S2 Gallery.

If you're looking to travel with your camera frequently, you are going to need to take into account its weight and proportions. The Olympus E-M1 enjoys physical measurements of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") accompanied by a weight of 497 grams (1.10 lbs) whilst the Pentax K-S2 has measurements of 123mm x 91mm x 73mm (4.8" x 3.6" x 2.9") having a weight of 678 grams (1.49 lbs).

Take a look at the Olympus E-M1 versus Pentax K-S2 in the new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary depending on the lens you select at that time. Here is the front view overall size comparison of the E-M1 versus the K-S2.

Factoring in dimensions and weight, the portability grade of the E-M1 and K-S2 is 71 and 64 respectively.

Sometimes, it's difficult to imagine the difference between sensor dimensions purely by checking specs. The picture here should provide you a greater sense of the sensor sizing in the E-M1 and K-S2.

All in all, both of those cameras posses different resolutions and different sensor dimensions. The E-M1 having a tinier sensor is going to make achieving shallow depth of field trickier and the Pentax K-S2 will resolve greater detail using its extra 4 Megapixels. Greater resolution will also enable you to crop pics somewhat more aggressively. The more aged E-M1 is going to be behind with regard to sensor tech.