Panasonic G2 vs Pentax 645D

In this write-up, we are matching up the Panasonic G2 and Pentax 645D, former being a Entry-Level Mirrorless while the other is a Pro DSLR by competitors Panasonic and Pentax. There is a sizable difference between the image resolutions of the G2 (12MP) and 645D (40MP) and the G2 (Four Thirds) and 645D (Medium format) enjoy totally different sensor size.

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The G2 was launched 5 months later than the 645D so they are both of a similar age. Each of these cameras offer different body type with the Panasonic G2 being a SLR-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before getting through a in depth comparison, below is a simple highlight of how the G2 grades against the 645D in the way of portability, imaging, features and an overall rating.

This is a sample of the gallery pictures for Panasonic Lumix DMC-G2 & Pentax 645D. The complete galleries are provided at Panasonic G2 Gallery & Pentax 645D Gallery.

When you are aiming to carry your camera frequently, you will have to take into account its weight and measurements. The Panasonic G2 offers physical measurements of 124mm x 84mm x 74mm (4.9" x 3.3" x 2.9") accompanied by a weight of 428 grams (0.94 lbs) whilst the Pentax 645D has proportions of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs).

Contrast the Panasonic G2 and Pentax 645D in our newest Camera plus Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ based on the lens you use at the time. The following is the front view proportions comparison of the G2 against the 645D.

Taking into account size and weight, the portability grade of the G2 and 645D is 72 and 50 respectively.

Generally, its tough to envision the gap between sensor sizing only by reading technical specs. The photograph below will give you a greater sense of the sensor measurements in the G2 and 645D.

As you can tell, each of the cameras offer different megapixel count and different sensor sizing. The G2 due to its tinier sensor will make shooting shallower DOF tougher and the Pentax 645D will deliver greater detail utilizing its extra 28MP. Greater resolution can also let you crop pics a little more aggressively.