Olympus E-330 vs Pentax 645Z

Here is a comprehensive comparison of the Olympus E-330 and Pentax 645Z, one being a Advanced DSLR and the other is a Pro DSLR by manufacturers Olympus and Pentax. There is a sizeable difference between the resolutions of the E-330 (7MP) and 645Z (51MP) and the E-330 (Four Thirds) and 645Z (Medium format) provide different sensor dimensions.

Photography Glossary

The E-330 was launched 9 years prior to the 645Z and that is quite a large gap as far as tech is concerned. Both of the cameras have different body design with the Olympus E-330 being a Mid-size SLR camera and the Pentax 645Z being a Large SLR camera.

Before going straight to a comprehensive comparison, here is a brief summary of how the E-330 matches up versus the 645Z with regards to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Olympus E-330 and Pentax 645Z. The complete galleries are available at Olympus E-330 Gallery and Pentax 645Z Gallery.

If you are going to carry your camera, you need to take into account its weight and dimensions. The Olympus E-330 features outside measurements of 140mm x 87mm x 72mm (5.5" x 3.4" x 2.8") having a weight of 616 grams (1.36 lbs) while the Pentax 645Z has dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") and a weight of 1550 grams (3.42 lbs).

Compare the Olympus E-330 and Pentax 645Z in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will change depending on the lens you are employing during that time. Here is a front view proportions comparison of the E-330 versus the 645Z.

Factoring in size and weight, the portability score of the E-330 and 645Z is 65 and 49 respectively.

Often, it's difficult to picture the gap between sensor sizing purely by looking at a spec sheet. The graphic underneath should give you a much better sense of the sensor sizing in the E-330 and 645Z.

As you can see, each of these cameras provide different resolutions and different sensor sizing. The E-330 featuring a tinier sensor is going to make shooting shallower depth of field more difficult and the Pentax 645Z will resolve extra detail utilizing its extra 44 Megapixels. Greater resolution will allow you to crop photos more aggressively. The older E-330 is going to be behind in sensor tech.