Panasonic S1R vs Pentax 645D

Following is a thorough assessment of the Panasonic S1R versus Pentax 645D, former is a Pro Mirrorless while the other is a Pro DSLR by companies Panasonic and Pentax. The image resolution of the S1R (47MP) and the 645D (40MP) is fairly comparable but the S1R (Full frame) and 645D (Medium format) possess totally different sensor measurements.

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The S1R was launched 9 years after the 645D which is a fairly significant difference as far as camera tech is concerned. Each of the cameras offer different body type with the Panasonic S1R being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before getting in to a more detailed comparison, below is a quick summation of how the S1R grades versus the 645D when considering portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Panasonic Lumix DC-S1R & Pentax 645D. The complete galleries are viewable at Panasonic S1R Gallery & Pentax 645D Gallery.

In case you're going to carry around your camera regularly, you will need to factor its weight and dimensions. The Panasonic S1R features physical dimensions of 149mm x 110mm x 97mm (5.9" x 4.3" x 3.8") with a weight of 1020 grams (2.25 lbs) and the Pentax 645D has dimensions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs).

Contrast the Panasonic S1R versus Pentax 645D in our brand new Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary based on the lens you have at the time. Following is the front view dimensions comparison of the S1R versus the 645D.

Considering size and weight, the portability rating of the S1R and 645D is 54 and 50 respectively.

In many cases, it is tough to see the contrast in sensor sizes purely by going through specs. The picture below should provide you a better sense of the sensor dimensions in the S1R and 645D.

As you can plainly see, both the cameras offer different megapixel count and different sensor sizes. The S1R because of its smaller sensor will make shooting shallower depth of field trickier and the Panasonic S1R will provide more detail utilizing its extra 7 Megapixels. Greater resolution will let you crop images a little more aggressively. The more recent S1R is going to have an advantage when it comes to sensor tech.