Panasonic GH2 vs Pentax 645Z

Lets look a little more closely at the Panasonic GH2 versus Pentax 645Z, one being a Advanced Mirrorless and the other is a Pro DSLR by manufacturers Panasonic and Pentax. There exists a crucial gap between the resolutions of the GH2 (16MP) and 645Z (51MP) and the GH2 (Four Thirds) and 645Z (Medium format) possess different sensor sizes.

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The GH2 was revealed 4 years earlier than the 645Z and that is quite a serious gap as far as technology is concerned. Both of these cameras come with different body type with the Panasonic GH2 being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before going through a detailed comparison, below is a short summation of how the GH2 grades vs the 645Z in the way of portability, imaging, features and an overall rating.

Below is a sample of the gallery pictures for Panasonic Lumix DMC-GH2 and Pentax 645Z. The full galleries are available at Panasonic GH2 Gallery and Pentax 645Z Gallery.

When you are looking to carry your camera regularly, you'll need to factor its weight and proportions. The Panasonic GH2 enjoys outside dimensions of 124mm x 90mm x 76mm (4.9" x 3.5" x 3.0") with a weight of 442 grams (0.97 lbs) while the Pentax 645Z has measurements of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") and a weight of 1550 grams (3.42 lbs).

Contrast the Panasonic GH2 versus Pentax 645Z in the latest Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will change based on the lens you have attached at that moment. Following is the front view overall size comparison of the GH2 versus the 645Z.

Using dimensions and weight, the portability rating of the GH2 and 645Z is 70 and 49 respectively.

More often than not, it is difficult to visualize the difference between sensor sizing merely by reviewing a spec sheet. The photograph here should give you a stronger sense of the sensor dimensions in the GH2 and 645Z.

Clearly, both of the cameras posses different megapixels and different sensor sizing. The GH2 with its tinier sensor is going to make achieving bokeh tougher and the Pentax 645Z will offer greater detail because of its extra 35 Megapixels. Greater resolution will let you crop photos somewhat more aggressively. The older GH2 is going to be behind when it comes to sensor tech.