Panasonic GH1 vs Pentax 645D

Here, we are comparing the Panasonic GH1 versus Pentax 645D, former is a Advanced Mirrorless while the other is a Pro DSLR by manufacturers Panasonic and Pentax. There is a considerable difference between the image resolutions of the GH1 (12MP) and 645D (40MP) and the GH1 (Four Thirds) and 645D (Medium format) posses totally different sensor measurements.

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The GH1 was brought out 8 months prior to the 645D and they are of a similar age. Each of the cameras feature different body design with the Panasonic GH1 being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before going right into a complete comparison, here is a short highlight of how the GH1 scores vs the 645D when it comes to portability, imaging, features and an overall mark.

Here is a sample of the gallery pictures for Panasonic Lumix DMC-GH1 & Pentax 645D. The entire galleries are available at Panasonic GH1 Gallery & Pentax 645D Gallery.

When you are going to travel with your camera, you'll need to factor in its weight and proportions. The Panasonic GH1 offers outside measurements of 124mm x 90mm x 45mm (4.9" x 3.5" x 1.8") and a weight of 385 grams (0.85 lbs) whilst the Pentax 645D has measurements 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 GH1 versus Pentax 645D in our completely new Camera plus Lens Size Comparison Tool.

Keep in mind, the weight of an ILC will change dependant on the lens you are working with at the time. Following is a front view dimension comparison of the GH1 versus the 645D.

Taking into consideration size and weight, the portability score of the GH1 and 645D is 81 and 50 respectively.

Often, it's hard to see the gap between sensor dimensions merely by checking a spec sheet. The image underneath should provide you a far better sense of the sensor measurements in the GH1 and 645D.

As you can see, both the cameras come with different resolutions and different sensor dimensions. The GH1 due to its tinier sensor will make getting shallow depth of field more difficult and the Pentax 645D will resolve greater detail having its extra 28MP. Greater resolution can also let you crop images a good deal more aggressively. The more aged GH1 is going to be behind with regard to sensor innovation.