Olympus E-M1 II vs Pentax S1

Here is a comprehensive assessment of the Olympus E-M1 II vs Pentax S1, one being a Pro Mirrorless and the latter is a Small Sensor Compact by rivals Olympus and Pentax. There is a huge difference between the sensor resolutions of the E-M1 II (20MP) and S1 (14MP) and the E-M1 II (Four Thirds) and S1 (1/2.3") possess different sensor dimensions.

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The E-M1 II was revealed 5 years later than the S1 and that is quite a significant gap as far as tech is concerned. Both of these cameras offer different body type with the Olympus E-M1 II being a SLR-style mirrorless camera and the Pentax S1 being a Compact camera.

Before delving in to a in-depth comparison, below is a simple synopsis of how the E-M1 II matches up versus the S1 in regards to portability, imaging, features and an overall rating.

Below is a preview of the gallery photos for Olympus OM-D E-M1 Mark II and Pentax Optio S1. The full galleries are viewable at Olympus E-M1 II Gallery and Pentax S1 Gallery.

If you are aiming to carry your camera, you are going to need to factor its weight and measurements. The Olympus E-M1 II offers outside measurements of 134mm x 91mm x 67mm (5.3" x 3.6" x 2.6") with a weight of 574 grams (1.27 lbs) and the Pentax S1 has proportions of 114mm x 58mm x 28mm (4.5" x 2.3" x 1.1") along with a weight of 157 grams (0.35 lbs).

See the Olympus E-M1 II vs Pentax S1 in the all new Camera and Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will change dependant on the lens you have chosen during that time. Following is the front view sizing comparison of the E-M1 II versus the S1.

Considering size and weight, the portability score of the E-M1 II and S1 is 68 and 93 respectively.

Usually, it is very difficult to picture the contrast between sensor sizing just by checking technical specs. The graphic here may give you a stronger sense of the sensor measurements in the E-M1 II and S1.

As you have seen, the 2 cameras enjoy different resolutions and different sensor sizing. The E-M1 II with its bigger sensor is going to make getting shallow depth of field easier and the Olympus E-M1 II will give extra detail because of its extra 6MP. Higher resolution will also allow you to crop photographs far more aggressively. The more recent E-M1 II provides a benefit when it comes to sensor innovation.