Olympus E-M1 vs Pentax K-5 IIs

The following is a in depth analysis of the Olympus E-M1 vs Pentax K-5 IIs, former is a Pro Mirrorless while the latter is a Advanced DSLR by companies Olympus and Pentax. The image resolution of the E-M1 (16MP) and the K-5 IIs (16MP) is relatively similar but the E-M1 (Four Thirds) and K-5 IIs (APS-C) posses totally different sensor dimensions.

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The E-M1 was released 5 months after the K-5 IIs which means that they are of a similar age. Both of the cameras feature different body design with the Olympus E-M1 being a SLR-style mirrorless camera and the Pentax K-5 IIs being a Mid-size SLR camera.

Before going into a more detailed comparison, here is a concise highlight of how the E-M1 matches up against the K-5 IIs in terms of portability, imaging, features and an overall mark.

This is a preview of the gallery photos for Olympus OM-D E-M1 & Pentax K-5 IIs. The complete galleries are provided at Olympus E-M1 Gallery & Pentax K-5 IIs Gallery.

When you are intending to travel with your camera, you have to consider its weight and proportions. The Olympus E-M1 features exterior measurements of 130mm x 94mm x 63mm (5.1" x 3.7" x 2.5") and a weight of 497 grams (1.10 lbs) whilst the Pentax K-5 IIs has measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") and a weight of 760 grams (1.68 lbs).

Compare the Olympus E-M1 vs Pentax K-5 IIs in our completely new Camera plus Lens Size Comparison Tool.

Always remember, the weight of an ILC will vary depending on the lens you are utilizing at that time. Underneath is a front view dimensions comparison of the E-M1 compared to the K-5 IIs.

Taking into consideration size and weight, the portability rating of the E-M1 and K-5 IIs is 71 and 60 respectively.

Usually, it's tough to see the gap between sensor dimensions merely by reviewing technical specs. The pic below might give you a much better sense of the sensor measurements in the E-M1 and K-5 IIs.

As you have seen, both of those cameras come with the identical resolution albeit not the same sensor dimensions. The E-M1 offers the tinier sensor which is going to make achieving bokeh trickier.