Panasonic S1 vs Pentax 645Z

Following is a extended assessment of the Panasonic S1 versus Pentax 645Z, one is a Pro Mirrorless and the other is a Pro DSLR by brands Panasonic and Pentax. There is a sizeable difference between the sensor resolutions of the S1 (24MP) and 645Z (51MP) and the S1 (Full frame) and 645Z (Medium format) provide totally different sensor sizes.

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The S1 was brought out 4 years after the 645Z which is quite a large gap as far as tech is concerned. Each of these cameras have different body design with the Panasonic S1 being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before going into a complete comparison, here is a quick summation of how the S1 scores vs the 645Z in terms of portability, imaging, features and an overall score.

Below is a sample of the gallery pictures for Panasonic Lumix DC-S1 and Pentax 645Z. The entire galleries are viewable at Panasonic S1 Gallery and Pentax 645Z Gallery.

For anyone who is going to carry around your camera, you should take into account its weight and measurements. The Panasonic S1 has exterior dimensions of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") along with a weight of 1021 grams (2.25 lbs) and the Pentax 645Z has proportions 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 Panasonic S1 versus Pentax 645Z in the all new Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will differ depending on the lens you are working with during that time. Following is a front view over all size comparison of the S1 and the 645Z.

Considering size and weight, the portability grade of the S1 and 645Z is 54 and 49 respectively.

Oftentimes, it's difficult to envision the gap between sensor sizes simply by going over technical specs. The image here might offer you a stronger sense of the sensor dimensions in the S1 and 645Z.

As you can tell, each of the cameras provide different resolutions and different sensor sizes. The S1 because of its tinier sensor will make achieving shallow DOF more challenging and the Pentax 645Z will deliver more detail having its extra 27 Megapixels. Greater resolution will also enable you to crop photos more aggressively. The younger S1 will have a benefit when it comes to sensor technology.