Olympus E-300 vs Pentax 645D

Here is a complete overview of the Olympus E-300 versus Pentax 645D, one being a Advanced DSLR and the latter is a Pro DSLR by manufacturers Olympus and Pentax. There exists a big gap between the sensor resolutions of the E-300 (8MP) and 645D (40MP) and the E-300 (Four Thirds) and 645D (Medium format) come with different sensor measurements.

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The E-300 was revealed 6 years before the 645D and that is quite a big gap as far as technology is concerned. Both the cameras come with different body type with the Olympus E-300 being a Mid-size SLR camera and the Pentax 645D being a Large SLR camera.

Before getting through a thorough comparison, below is a short summation of how the E-300 grades against the 645D with regards to portability, imaging, features and an overall rating.

The following is a preview of the gallery images for Olympus E-300 and Pentax 645D. The full galleries are viewable at Olympus E-300 Gallery and Pentax 645D Gallery.

In case you're intending to carry your camera regularly, you need to factor its weight and volume. The Olympus E-300 has physical dimensions of 147mm x 85mm x 64mm (5.8" x 3.3" x 2.5") and a weight of 624 grams (1.38 lbs) and the Pentax 645D has sizing 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-300 versus Pentax 645D in the all new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you have chosen during that time. Underneath is the front view measurement comparison of the E-300 against the 645D.

Looking at dimensions and weight, the portability score of the E-300 and 645D is 67 and 50 respectively.

Quite often, it is difficult to imagine the difference between sensor sizing merely by reviewing a spec sheet. The visual below may offer you a better sense of the sensor dimensions in the E-300 and 645D.

As you can see, each of the cameras posses different megapixels and different sensor sizing. The E-300 with its tinier sensor is going to make achieving shallow DOF more difficult and the Pentax 645D will offer greater detail because of its extra 32MP. Higher resolution will let you crop photographs somewhat more aggressively. The older E-300 is going to be disadvantaged with regard to sensor innovation.