Olympus E-450 vs Pentax 645D

Let's look much closer at the Olympus E-450 versus Pentax 645D, former being a Entry-Level DSLR while the other is a Pro DSLR by rivals Olympus and Pentax. There is a noticeable difference between the image resolutions of the E-450 (10MP) and 645D (40MP) and the E-450 (Four Thirds) and 645D (Medium format) feature totally different sensor sizes.

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The E-450 was unveiled 11 months prior to the 645D and they are both of a similar age. Both of the cameras come with different body type with the Olympus E-450 being a Compact SLR camera and the Pentax 645D being a Large SLR camera.

Before diving through a detailed comparison, below is a quick overview of how the E-450 grades vs the 645D in regards to portability, imaging, features and an overall rating.

This is a sample of the gallery pics for Olympus E-450 & Pentax 645D. The full galleries are available at Olympus E-450 Gallery & Pentax 645D Gallery.

In case you're intending to carry your camera, you should consider its weight and proportions. The Olympus E-450 has got physical measurements of 130mm x 91mm x 53mm (5.1" x 3.6" x 2.1") having a weight of 426 grams (0.94 lbs) while the Pentax 645D has measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Check out the Olympus E-450 versus Pentax 645D in our brand new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will differ dependant on the lens you have chosen during that time. Underneath is the front view measurements comparison of the E-450 versus the 645D.

Taking into consideration size and weight, the portability grade of the E-450 and 645D is 77 and 50 respectively.

Oftentimes, it can be hard to envision the difference between sensor sizing simply by going over specs. The graphic below should provide you a greater sense of the sensor measurements in the E-450 and 645D.

All in all, both cameras posses different megapixels and different sensor sizing. The E-450 with its tinier sensor will make getting bokeh harder and the Pentax 645D will deliver extra detail having an extra 30 Megapixels. Greater resolution can also allow you to crop pics somewhat more aggressively. The older E-450 is going to be disadvantaged when it comes to sensor innovation.