Olympus 1s vs Pentax 645Z

Below, we will be matching up the Olympus 1s versus Pentax 645Z, one being a Small Sensor Superzoom and the latter is a Pro DSLR by rivals Olympus and Pentax. There is a huge difference among the sensor resolutions of the 1s (12MP) and 645Z (51MP) and the 1s (1/1.7") and 645Z (Medium format) possess totally different sensor size.

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The 1s was manufactured 13 months later than the 645Z which makes the cameras a generation apart from each other. The two cameras come with different body type with the Olympus 1s being a SLR-like (bridge) camera and the Pentax 645Z being a Large SLR camera.

Before diving through a more detailed comparison, below is a short highlight of how the 1s matches up vs the 645Z with regards to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Olympus Stylus 1s and Pentax 645Z. The entire galleries are viewable at Olympus 1s Gallery and Pentax 645Z Gallery.

If you are aiming to carry your camera regularly, you're going to have to think about its weight and size. The Olympus 1s provides external dimensions of 116mm x 87mm x 57mm (4.6" x 3.4" x 2.2") with a weight of 402 grams (0.89 lbs) and the Pentax 645Z has specifications of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs).

Examine the Olympus 1s versus Pentax 645Z in the all new Camera with Lens Size Comparison Tool.

Take into account, the weight of an Interchangeable Lens Camera will vary depending on the lens you are working with at that time. Below is the front view scale comparison of the 1s vs the 645Z.

Taking into consideration size and weight, the portability score of the 1s and 645Z is 79 and 49 respectively.

Often, it is hard to envision the gap in sensor sizing merely by researching a spec sheet. The photograph underneath may give you a more clear sense of the sensor dimensions in the 1s and 645Z.

Clearly, both of those cameras have got different resolutions and different sensor sizing. The 1s due to its smaller sensor will make shooting shallow DOF more challenging and the Pentax 645Z will result in more detail due to its extra 39 Megapixels. Higher resolution will also make it easier to crop shots much more aggressively. The more recent 1s is going to have an advantage when it comes to sensor tech.