Olympus E-M10 II vs Pentax K-S1

Let's examine more in depth at the Olympus E-M10 II vs Pentax K-S1, former being a Entry-Level Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. The sensor resolution of the E-M10 II (16MP) and the K-S1 (20MP) is pretty close but the E-M10 II (Four Thirds) and K-S1 (APS-C) enjoy totally different sensor sizing.

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The E-M10 II was introduced 13 months later than the K-S1 which makes the cameras a generation apart from each other. Each of these cameras offer different body type with the Olympus E-M10 II being a SLR-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.

Before delving straight into a thorough comparison, below is a simple highlight of how the E-M10 II matches up vs the K-S1 with regards to portability, imaging, features and an overall grade.

Below is a preview of the gallery images for Olympus OM-D E-M10 II & Pentax K-S1. The whole galleries are provided at Olympus E-M10 II Gallery & Pentax K-S1 Gallery.

For those who are planning to lug around your camera frequently, you'll need to factor in its weight and volume. The Olympus E-M10 II provides external dimensions of 120mm x 83mm x 47mm (4.7" x 3.3" x 1.9") with a weight of 390 grams (0.86 lbs) and the Pentax K-S1 has sizing of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") with a weight of 558 grams (1.23 lbs).

Compare the Olympus E-M10 II vs Pentax K-S1 in our newest Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will change dependant on the lens you select at that time. Below is the front view measurements comparison of the E-M10 II vs the K-S1.

Taking into account size and weight, the portability grade of the E-M10 II and K-S1 is 82 and 69 respectively.

Oftentimes, it can be hard to see the gap in sensor measurements only by looking through technical specs. The visual below might offer you a better sense of the sensor sizes in the E-M10 II and K-S1.

As you can tell, the two cameras enjoy different resolutions and different sensor measurements. The E-M10 II using its smaller sensor will make getting shallow depth of field more difficult and the Pentax K-S1 will result in more detail using its extra 4 Megapixels. Higher resolution can also allow you to crop pictures far more aggressively. The more modern E-M10 II will have a benefit in sensor technology.