Panasonic G9 vs Pentax 645D

Its time to look a little more in depth at the Panasonic G9 vs Pentax 645D, one is a Pro Mirrorless and the other is a Pro DSLR by companies Panasonic and Pentax. There is a sizeable difference among the sensor resolutions of the G9 (20MP) and 645D (40MP) and the G9 (Four Thirds) and 645D (Medium format) offer totally different sensor dimensions.

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The G9 was manufactured 7 years after the 645D which is a fairly large gap as far as camera tech is concerned. Each of these cameras have different body design with the Panasonic G9 being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before diving straight to a step-by-step comparison, here is a short view of how the G9 scores against the 645D in regards to portability, imaging, features and an overall mark.

This is a sample of the gallery pics for Panasonic Lumix DC-G9 and Pentax 645D. The entire galleries are provided at Panasonic G9 Gallery and Pentax 645D Gallery.

For anybody who is looking to travel with your camera frequently, you will have to consider its weight and size. The Panasonic G9 features external dimensions of 137mm x 97mm x 92mm (5.4" x 3.8" x 3.6") and a weight of 658 grams (1.45 lbs) while the Pentax 645D has specifications of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") having a weight of 1480 grams (3.26 lbs).

Contrast the Panasonic G9 vs Pentax 645D in the all new Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will vary dependant on the lens you have attached at that time. The following is a front view overall size comparison of the G9 and the 645D.

Taking into account size and weight, the portability grade of the G9 and 645D is 62 and 50 respectively.

Generally, it can be hard to see the gap in sensor dimensions merely by seeing technical specs. The picture here might give you a far better sense of the sensor sizes in the G9 and 645D.

As you can tell, the two cameras have different megapixels and different sensor dimensions. The G9 featuring a smaller sensor will make achieving shallow depth of field more challenging and the Pentax 645D will produce more detail due to its extra 20 Megapixels. Greater resolution will enable you to crop photos a bit more aggressively. The more modern G9 is going to have an edge when it comes to sensor tech.