Fujifilm S1 Pro vs Pentax 645D

Let's look closer at the Fujifilm S1 Pro versus Pentax 645D, both Pro DSLR digital cameras by companies FujiFilm and Pentax. There is a sizable difference between the sensor resolutions of the Fujifilm S1 Pro (3MP) and 645D (40MP) and the Fujifilm S1 Pro (APS-C) and 645D (Medium format) use totally different sensor size.

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The Fujifilm S1 Pro was unveiled 10 years before the 645D and that is quite a significant difference as far as tech is concerned. The two cameras offer the identical body type (Large SLR).

Before we go through a step-by-step comparison, below is a quick overview of how the Fujifilm S1 Pro grades vs the 645D in relation to portability, imaging, features and an overall rating.

Below is a sample of the gallery pics for Fujifilm FinePix S1 Pro & Pentax 645D. The full galleries are viewable at Fujifilm S1 Pro Gallery & Pentax 645D Gallery.

For those who are planning to carry your camera frequently, you'll have to factor in its weight and measurements. The Fujifilm S1 Pro comes with physical measurements of 148mm x 125mm x 80mm (5.8" x 4.9" x 3.1") having a weight of 820 grams (1.81 lbs) and the Pentax 645D has proportions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs).

Examine the Fujifilm S1 Pro versus Pentax 645D in our completely new Camera & Lens Size Comparison Tool.

Remember, the weight of an ILC will change depending on the lens you have attached during that time. Below is the front view proportions comparison of the Fujifilm S1 Pro against the 645D.

Looking at size and weight, the portability rating of the Fujifilm S1 Pro and 645D is 56 and 50 respectively.

Usually, it can be difficult to see the gap between sensor sizing only by going over specifications. The visual underneath should give you a clearer sense of the sensor sizing in the Fujifilm S1 Pro and 645D.

To sum up, both the cameras offer different megapixels and different sensor sizing. The Fujifilm S1 Pro having a tinier sensor will make getting shallow depth of field more challenging and the Pentax 645D will offer extra detail having an extra 37 Megapixels. Greater resolution will also let you crop images a little more aggressively. The older Fujifilm S1 Pro is going to be behind when it comes to sensor tech.