Olympus E-520 vs Pentax 645D

Below is a complete comparison of the Olympus E-520 vs Pentax 645D, one being a Entry-Level DSLR and the latter is a Pro DSLR by competitors Olympus and Pentax. There is a big difference among the sensor resolutions of the E-520 (10MP) and 645D (40MP) and the E-520 (Four Thirds) and 645D (Medium format) possess different sensor measurements.

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The E-520 was introduced 18 months before the 645D which makes the cameras a generation apart from each other. Each of these cameras offer different body type with the Olympus E-520 being a Compact SLR camera and the Pentax 645D being a Large SLR camera.

Before diving through a more detailed comparison, below is a quick summary of how the E-520 matches up vs the 645D in regards to portability, imaging, features and an overall grade.

Here is a preview of the gallery photos for Olympus E-520 and Pentax 645D. The whole galleries are available at Olympus E-520 Gallery and Pentax 645D Gallery.

For anybody who is going to lug around your camera frequently, you need to factor its weight and dimensions. The Olympus E-520 has physical dimensions of 136mm x 92mm x 68mm (5.4" x 3.6" x 2.7") having a weight of 552 grams (1.22 lbs) whilst the Pentax 645D has dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs).

Compare the Olympus E-520 vs Pentax 645D in the new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will vary depending on the lens you are utilising at that time. The following is the front view sizing comparison of the E-520 and the 645D.

Using size and weight, the portability rating of the E-520 and 645D is 68 and 50 respectively.

Often, it's hard to visualize the contrast in sensor measurements merely by checking out specs. The graphic underneath might provide you a far better sense of the sensor dimensions in the E-520 and 645D.

All in all, both of these cameras enjoy different resolutions and different sensor measurements. The E-520 having a smaller sensor is going to make achieving shallower depth of field more difficult and the Pentax 645D will show extra detail using its extra 30 Megapixels. Higher resolution will help you crop shots far more aggressively. The older E-520 will be behind in sensor technology.