Olympus TG-860 vs Pentax 645Z

Below is a thorough analysis of the Olympus TG-860 versus Pentax 645Z, one being a Waterproof and the latter is a Pro DSLR by competitors Olympus and Pentax. There exists a significant gap among the sensor resolutions of the TG-860 (16MP) and 645Z (51MP) and the TG-860 (1/2.3") and 645Z (Medium format) use totally different sensor size.

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The TG-860 was unveiled 10 months later than the 645Z and they are both of a similar generation. Both of these cameras offer different body type with the Olympus TG-860 being a Ultracompact camera and the Pentax 645Z being a Large SLR camera.

Before getting in to a more detailed comparison, below is a concise view of how the TG-860 scores versus the 645Z in terms of portability, imaging, features and an overall grade.

This is a preview of the gallery photos for Olympus Stylus Tough TG-860 and Pentax 645Z. The full galleries are available at Olympus TG-860 Gallery and Pentax 645Z Gallery.

In case you're looking to lug around your camera frequently, you need to take into account its weight and proportions. The Olympus TG-860 features outer dimensions of 110mm x 64mm x 28mm (4.3" x 2.5" x 1.1") with a weight of 224 grams (0.49 lbs) and the Pentax 645Z has measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs).

See the Olympus TG-860 versus Pentax 645Z in the latest Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change dependant on the lens you are working with at that time. The following is the front view measurements comparison of the TG-860 versus the 645Z.

Considering dimensions and weight, the portability grade of the TG-860 and 645Z is 91 and 49 respectively.

Quite often, it is difficult to envision the difference in sensor measurements merely by researching technical specs. The photograph underneath may offer you a greater sense of the sensor dimensions in the TG-860 and 645Z.

As you can tell, both cameras enjoy different resolutions and different sensor measurements. The TG-860 with its smaller sensor will make shooting shallower depth of field more challenging and the Pentax 645Z will result in extra detail having an extra 35MP. Higher resolution will allow you to crop photographs far more aggressively. The younger TG-860 is going to have a benefit in sensor innovation.