Olympus E-P5 vs Pentax 645D

Let's look more in depth at the Olympus E-P5 vs Pentax 645D, one is a Entry-Level Mirrorless and the other is a Pro DSLR by rivals Olympus and Pentax. There exists a big gap among the image resolutions of the E-P5 (16MP) and 645D (40MP) and the E-P5 (Four Thirds) and 645D (Medium format) offer totally different sensor sizes.

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The E-P5 was manufactured 3 years after the 645D which is a fairly big gap as far as camera technology is concerned. Each of these cameras feature different body design with the Olympus E-P5 being a Rangefinder-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before diving into a in depth comparison, here is a quick summary of how the E-P5 grades versus the 645D with regard to portability, imaging, features and an overall score.

Below is a sample of the gallery pics for Olympus PEN E-P5 and Pentax 645D. The entire galleries are viewable at Olympus E-P5 Gallery and Pentax 645D Gallery.

If you're going to carry around your camera regularly, you'll have to think about its weight and measurements. The Olympus E-P5 features exterior dimensions of 122mm x 69mm x 37mm (4.8" x 2.7" x 1.5") having a weight of 420 grams (0.93 lbs) whilst the Pentax 645D has proportions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Analyze the Olympus E-P5 vs Pentax 645D in the latest Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary based on the lens you have attached at that moment. The following is a front view physical size comparison of the E-P5 against the 645D.

Considering dimensions and weight, the portability rating of the E-P5 and 645D is 85 and 50 respectively.

More often than not, its tough to envision the difference in sensor sizes only by viewing technical specs. The picture below might provide you a far better sense of the sensor sizes in the E-P5 and 645D.

As you can tell, both the cameras come with different megapixels and different sensor sizes. The E-P5 featuring a smaller sensor will make getting shallower depth of field harder and the Pentax 645D will render more detail due to its extra 24MP. Greater resolution can also let you crop pics a good deal more aggressively. The newer E-P5 will have an advantage in sensor technology.