Panasonic S1R vs Pentax 645Z

Its time to examine more closely at the Panasonic S1R and Pentax 645Z, one is a Pro Mirrorless and the other is a Pro DSLR by rivals Panasonic and Pentax. The image resolution of the S1R (47MP) and the 645Z (51MP) is very well matched but the S1R (Full frame) and 645Z (Medium format) feature totally different sensor dimensions.

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The S1R was manufactured 4 years after the 645Z which is quite a serious gap as far as technology is concerned. Each of the cameras offer different body type with the Panasonic S1R being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before delving straight into a complete comparison, below is a quick view of how the S1R matches up versus the 645Z in the way of portability, imaging, features and an overall mark.

The following is a sample of the gallery pics for Panasonic Lumix DC-S1R and Pentax 645Z. The entire galleries are available at Panasonic S1R Gallery and Pentax 645Z Gallery.

For anyone who is aiming to travel with your camera regularly, you'll need to factor its weight and proportions. The Panasonic S1R has outer measurements of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") accompanied by a weight of 1020 grams (2.25 lbs) while the Pentax 645Z has measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") and a weight of 1550 grams (3.42 lbs).

Look at the Panasonic S1R and Pentax 645Z in the all new Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary based on the lens you use at that moment. Following is the front view physical size comparison of the S1R versus the 645Z.

Factoring in dimensions and weight, the portability grade of the S1R and 645Z is 54 and 49 respectively.

More often than not, it can be tough to see the gap between sensor dimensions merely by looking at technical specs. The pic below should offer you a greater sense of the sensor sizing in the S1R and 645Z.

As you can tell, both of the cameras offer different megapixel count and different sensor dimensions. The S1R featuring a tinier sensor will make shooting shallower depth of field tougher and the Pentax 645Z will give you more detail due to its extra 4MP. Greater resolution can also allow you to crop photos a little more aggressively. The younger S1R will have an advantage with regard to sensor technology.