Olympus SP-820UZ vs Pentax 645Z

Below is a thorough review of the Olympus SP-820UZ versus Pentax 645Z, one being a Small Sensor Superzoom and the other is a Pro DSLR by manufacturers Olympus and Pentax. There is a crucial difference between the resolutions of the SP-820UZ (14MP) and 645Z (51MP) and the SP-820UZ (1/2.3") and 645Z (Medium format) enjoy totally different sensor size.

Samsung Releases Faster Versions of EVO MicroSD Cards

The SP-820UZ was unveiled 20 months prior to the 645Z making the cameras a generation apart from each other. The two cameras come with different body type with the Olympus SP-820UZ being a Compact camera and the Pentax 645Z being a Large SLR camera.

Before delving in to a step-by-step comparison, below is a concise summary of how the SP-820UZ grades versus the 645Z in regards to portability, imaging, features and an overall grade.

This is a sample of the gallery pics for Olympus Stylus SP-820UZ and Pentax 645Z. The full galleries are available at Olympus SP-820UZ Gallery and Pentax 645Z Gallery.

In case you're intending to lug around your camera frequently, you will need to consider its weight and dimensions. The Olympus SP-820UZ features exterior measurements of 117mm x 78mm x 93mm (4.6" x 3.1" x 3.7") having a weight of 485 grams (1.07 lbs) while the Pentax 645Z has dimensions 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-820UZ versus Pentax 645Z in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you use at that time. Below is the front view measurement comparison of the SP-820UZ against the 645Z.

Taking into account size and weight, the portability grade of the SP-820UZ and 645Z is 69 and 49 respectively.

Usually, it's difficult to visualise the difference between sensor measurements purely by reviewing a spec sheet. The photograph here will offer you a clearer sense of the sensor measurements in the SP-820UZ and 645Z.

Clearly, both of the cameras posses different resolutions and different sensor measurements. The SP-820UZ having a tinier sensor will make shooting bokeh harder and the Pentax 645Z will offer you greater detail having an extra 37MP. Greater resolution will also enable you to crop images somewhat more aggressively. The older SP-820UZ is going to be behind when it comes to sensor innovation.