Olympus E-M10 II vs Pentax 645Z

Here, we are reviewing the Olympus E-M10 II vs Pentax 645Z, one is a Entry-Level Mirrorless and the other is a Pro DSLR by companies Olympus and Pentax. There is a big difference between the sensor resolutions of the E-M10 II (16MP) and 645Z (51MP) and the E-M10 II (Four Thirds) and 645Z (Medium format) boast different sensor sizes.

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The E-M10 II was released 17 months after the 645Z making them a generation away from each other. Both of the cameras feature different body design with the Olympus E-M10 II being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before going straight to a complete comparison, here is a concise summation of how the E-M10 II grades against the 645Z in regards to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Olympus OM-D E-M10 II and Pentax 645Z. The complete galleries are viewable at Olympus E-M10 II Gallery and Pentax 645Z Gallery.

If you are planning to carry around your camera frequently, you will have to think about its weight and proportions. The Olympus E-M10 II provides physical dimensions of 120mm x 83mm x 47mm (4.7" x 3.3" x 1.9") and a weight of 390 grams (0.86 lbs) while the Pentax 645Z has measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs).

Examine the Olympus E-M10 II vs Pentax 645Z in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ depending on the lens you choose during that time. Following is a front view dimensions comparison of the E-M10 II vs the 645Z.

Factoring in size and weight, the portability score of the E-M10 II and 645Z is 82 and 49 respectively.

Often, it can be tough to visualize the difference between sensor sizes simply by reading through a spec sheet. The image here might offer you a far better sense of the sensor dimensions in the E-M10 II and 645Z.

As you can see, both cameras feature different megapixels and different sensor sizes. The E-M10 II because of its tinier sensor is going to make shooting shallower DOF more difficult and the Pentax 645Z will resolve more detail as a result of its extra 35MP. Greater resolution will also make it easier to crop pics way more aggressively. The more recent E-M10 II provides an edge with regard to sensor tech.