Olympus E-PM2 vs Pentax K-S1

Following is a detailed overview of the Olympus E-PM2 and Pentax K-S1, former is a Entry-Level Mirrorless while the latter is a Advanced DSLR by competitors Olympus and Pentax. The image resolution of the E-PM2 (16MP) and the K-S1 (20MP) is relatively comparable but the E-PM2 (Four Thirds) and K-S1 (APS-C) possess different sensor measurements.

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The E-PM2 was launched 15 months earlier than the K-S1 which makes the cameras a generation away from each other. Both cameras offer different body type with the Olympus E-PM2 being a Rangefinder-style mirrorless camera and the Pentax K-S1 being a Mid-size SLR camera.

Before delving straight into a thorough comparison, below is a brief view of how the E-PM2 matches up versus the K-S1 when it comes to portability, imaging, features and an overall score.

Following is a preview of the gallery photos for Olympus PEN E-PM2 & Pentax K-S1. The complete galleries are available at Olympus E-PM2 Gallery & Pentax K-S1 Gallery.

For those who are aiming to carry around your camera regularly, you will have to consider its weight and proportions. The Olympus E-PM2 has outer measurements of 110mm x 64mm x 34mm (4.3" x 2.5" x 1.3") with a weight of 269 grams (0.59 lbs) while the Pentax K-S1 has measurements of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") having a weight of 558 grams (1.23 lbs).

Look at the Olympus E-PM2 and Pentax K-S1 in our newest Camera & Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will vary dependant on the lens you select at that moment. The following is the front view size comparison of the E-PM2 compared to the K-S1.

Considering size and weight, the portability grade of the E-PM2 and K-S1 is 89 and 69 respectively.

Often, it can be difficult to imagine the difference in sensor sizes purely by going through specs. The pic here may provide you a better sense of the sensor measurements in the E-PM2 and K-S1.

As you can plainly see, both of the cameras enjoy different megapixels and different sensor sizes. The E-PM2 because of its smaller sensor is going to make shooting shallower depth of field more challenging and the Pentax K-S1 will produce more detail utilizing its extra 4MP. Higher resolution can also allow you to crop shots far more aggressively. The more aged E-PM2 will be behind with regard to sensor technology.