Olympus E-PL7 vs Pentax 645D

On this page, we are analyzing the Olympus E-PL7 vs Pentax 645D, one being a Entry-Level Mirrorless and the other is a Pro DSLR by manufacturers Olympus and Pentax. There is a significant difference among the resolutions of the E-PL7 (16MP) and 645D (40MP) and the E-PL7 (Four Thirds) and 645D (Medium format) offer totally different sensor sizes.

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The E-PL7 was brought out 4 years later than the 645D and that is a fairly sizable gap as far as camera tech is concerned. Both cameras have different body design with the Olympus E-PL7 being a Rangefinder-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before diving right into a thorough comparison, here is a concise overview of how the E-PL7 matches up vs the 645D in terms of portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Olympus PEN E-PL7 and Pentax 645D. The entire galleries are viewable at Olympus E-PL7 Gallery and Pentax 645D Gallery.

For anybody who is planning to carry your camera regularly, you will need to consider its weight and size. The Olympus E-PL7 features physical measurements of 115mm x 67mm x 38mm (4.5" x 2.6" x 1.5") accompanied by a weight of 357 grams (0.79 lbs) while the Pentax 645D has specifications of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") accompanied by a weight of 1480 grams (3.26 lbs).

See the Olympus E-PL7 vs Pentax 645D in the latest Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change depending on the lens you are using during that time. Below is a front view over all size comparison of the E-PL7 vs the 645D.

Looking at size and weight, the portability rating of the E-PL7 and 645D is 86 and 50 respectively.

Often, it is very hard to see the contrast in sensor sizing simply by looking through technical specs. The photograph below might give you a more clear sense of the sensor sizing in the E-PL7 and 645D.

As you can tell, each of these cameras have different megapixels and different sensor sizing. The E-PL7 due to its smaller sensor will make achieving shallower depth of field more difficult and the Pentax 645D will render greater detail having its extra 24 Megapixels. Greater resolution can also let you crop images a bit more aggressively. The more recent E-PL7 is going to have an edge in sensor technology.