Olympus SP-100 vs Pentax 645Z

On this page, we will be matching up the Olympus SP-100 and Pentax 645Z, one is a Small Sensor Superzoom and the latter is a Pro DSLR by manufacturers Olympus and Pentax. There exists a big gap among the image resolutions of the SP-100 (16MP) and 645Z (51MP) and the SP-100 (1/2.3") and 645Z (Medium format) provide totally different sensor sizing.

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The SP-100 was launched 2 months earlier than the 645Z so they are of a similar generation. Both cameras have different body design with the Olympus SP-100 being a SLR-like (bridge) camera and the Pentax 645Z being a Large SLR camera.

Before going into a complete comparison, here is a concise view of how the SP-100 matches up versus the 645Z in regards to portability, imaging, features and an overall score.

Following is a preview of the gallery photos for Olympus Stylus SP-100 and Pentax 645Z. The complete galleries are viewable at Olympus SP-100 Gallery and Pentax 645Z Gallery.

For those who are looking to carry around your camera, you will want to think about its weight and volume. The Olympus SP-100 provides outer dimensions of 122mm x 91mm x 133mm (4.8" x 3.6" x 5.2") accompanied by a weight of 594 grams (1.31 lbs) whilst the Pentax 645Z has sizing of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs).

Look at the Olympus SP-100 and Pentax 645Z in the new Camera with Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will change based on the lens you are utilising at that time. Following is a front view measurement comparison of the SP-100 versus the 645Z.

Factoring in dimensions and weight, the portability rating of the SP-100 and 645Z is 63 and 49 respectively.

More often than not, it can be difficult to envision the contrast in sensor sizes simply by researching specifications. The image here should offer you a more clear sense of the sensor sizes in the SP-100 and 645Z.

To sum up, each of these cameras have different megapixels and different sensor sizes. The SP-100 due to its smaller sensor will make getting shallower DOF more difficult and the Pentax 645Z will result in extra detail utilizing its extra 35MP. Higher resolution will make it easier to crop photographs a bit more aggressively.