Olympus SP-620 UZ vs Pentax 645Z

In this write-up, we will be analyzing the Olympus SP-620 UZ versus Pentax 645Z, former being a Small Sensor Superzoom while the latter is a Pro DSLR by manufacturers Olympus and Pentax. There exists a noticeable gap between the sensor resolutions of the SP-620 UZ (16MP) and 645Z (51MP) and the SP-620 UZ (1/2.3") and 645Z (Medium format) feature different sensor sizes.

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The SP-620 UZ was brought out 3 years before the 645Z and that is quite a sizable difference as far as technology is concerned. Both of these cameras offer different body type with the Olympus SP-620 UZ being a Compact camera and the Pentax 645Z being a Large SLR camera.

Before going in to a in depth comparison, below is a brief view of how the SP-620 UZ scores against the 645Z when considering portability, imaging, features and an overall grade.

Below is a preview of the gallery photos for Olympus SP-620 UZ & Pentax 645Z. The entire galleries are available at Olympus SP-620 UZ Gallery & Pentax 645Z Gallery.

When you are aiming to lug around your camera, you have to factor its weight and proportions. The Olympus SP-620 UZ has got physical measurements of 110mm x 74mm x 74mm (4.3" x 2.9" x 2.9") and a weight of 435 grams (0.96 lbs) and the Pentax 645Z has measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs).

Compare the Olympus SP-620 UZ versus Pentax 645Z in our newest Camera & Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change dependant on the lens you are using at the time. Following is the front view size comparison of the SP-620 UZ against the 645Z.

Considering dimensions and weight, the portability rating of the SP-620 UZ and 645Z is 78 and 49 respectively.

Quite often, it can be hard to imagine the difference between sensor measurements just by going over specifications. The graphic here may provide you a much better sense of the sensor measurements in the SP-620 UZ and 645Z.

To sum up, each of the cameras enjoy different megapixels and different sensor measurements. The SP-620 UZ due to its tinier sensor is going to make shooting shallower depth of field harder and the Pentax 645Z will offer greater detail having its extra 35MP. Higher resolution will help you crop pictures far more aggressively. The older SP-620 UZ is going to be behind when it comes to sensor innovation.