Panasonic G9 vs Pentax 645Z

Let's take a deeper look at the Panasonic G9 versus Pentax 645Z, former is a Pro Mirrorless while the other is a Pro DSLR by manufacturers Panasonic and Pentax. There exists a noticeable gap between the image resolutions of the G9 (20MP) and 645Z (51MP) and the G9 (Four Thirds) and 645Z (Medium format) offer totally different sensor dimensions.

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The G9 was launched 3 years after the 645Z which is quite a sizable difference as far as technology is concerned. Each of the cameras have different body design with the Panasonic G9 being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before going right into a thorough comparison, here is a quick highlight of how the G9 grades versus the 645Z in relation to portability, imaging, features and an overall score.

Here is a sample of the gallery pictures for Panasonic Lumix DC-G9 & Pentax 645Z. The complete galleries are provided at Panasonic G9 Gallery & Pentax 645Z Gallery.

If you are aiming to carry around your camera frequently, you will need to take into account its weight and volume. The Panasonic G9 comes with exterior measurements of 137mm x 97mm x 92mm (5.4" x 3.8" x 3.6") with a weight of 658 grams (1.45 lbs) and the Pentax 645Z has sizing of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") along with a weight of 1550 grams (3.42 lbs).

Take a look at the Panasonic G9 versus Pentax 645Z in our completely new Camera & Lens Size Comparison Tool.

Do not forget, the weight of an ILC will vary dependant on the lens you use during that time. Following is a front view measurement comparison of the G9 vs the 645Z.

Factoring in dimensions and weight, the portability score of the G9 and 645Z is 62 and 49 respectively.

Sometimes, it can be difficult to visualise the contrast between sensor sizes simply by checking specs. The pic here will help provide you a better sense of the sensor measurements in the G9 and 645Z.

As you can plainly see, both cameras have different megapixels and different sensor sizes. The G9 because of its tinier sensor will make getting shallow depth of field harder and the Pentax 645Z will give extra detail utilizing its extra 31MP. Greater resolution will allow you to crop photos a bit more aggressively. The younger G9 will have an advantage with regard to sensor tech.