Pentax 645D vs Pentax WG-1 GPS

Below is a extensive overview of the Pentax 645D and Pentax WG-1 GPS, one being a Pro DSLR and the other is a Waterproof and they are both sold by Pentax. There is a crucial difference among the sensor resolutions of the 645D (40MP) and WG-1 GPS (14MP) and the 645D (Medium format) and WG-1 GPS (1/2.3") come with different sensor size.

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The 645D was brought out 17 months before the WG-1 GPS making the cameras a generation apart from each other. Each of these cameras offer different body type with the Pentax 645D being a Large SLR camera and the Pentax WG-1 GPS being a Compact camera.

Before diving in to a detailed comparison, below is a brief overview of how the 645D scores vs the WG-1 GPS with respect to portability, imaging, features and an overall grade.

Here is a sample of the gallery pictures for Pentax 645D and Pentax Optio WG-1 GPS. The entire galleries are available at Pentax 645D Gallery and Pentax WG-1 GPS Gallery.

For those who are aiming to lug around your camera often, you are going to need to think about its weight and dimensions. The Pentax 645D offers external measurements of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") and a weight of 1480 grams (3.26 lbs) whilst the Pentax WG-1 GPS has dimensions of 116mm x 59mm x 29mm (4.6" x 2.3" x 1.1") having a weight of 167 grams (0.37 lbs).

See the Pentax 645D and Pentax WG-1 GPS in the latest Camera with Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will change depending on the lens you are using at that time. Following is the front view proportions comparison of the 645D versus the WG-1 GPS.

Using size and weight, the portability grade of the 645D and WG-1 GPS is 50 and 93 respectively.

Generally, it can be difficult to visualize the contrast in sensor measurements only by viewing specifications. The graphic below should give you a stronger sense of the sensor measurements in the 645D and WG-1 GPS.

To sum up, both the cameras enjoy different megapixels and different sensor measurements. The 645D due to its larger sensor is going to make achieving shallow depth of field easier and the Pentax 645D will render more detail having its extra 26 Megapixels. Greater resolution will let you crop photos far more aggressively. The older 645D will be disadvantaged with regard to sensor technology.