Panasonic GM5 vs Pentax 645D

In this article, we will be comparing the Panasonic GM5 and Pentax 645D, one being a Entry-Level Mirrorless and the latter is a Pro DSLR by rivals Panasonic and Pentax. There is a big difference among the image resolutions of the GM5 (16MP) and 645D (40MP) and the GM5 (Four Thirds) and 645D (Medium format) feature different sensor size.

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The GM5 was announced 4 years later than the 645D and that is a fairly big gap as far as camera tech is concerned. Each of these cameras offer different body type with the Panasonic GM5 being a Rangefinder-style mirrorless camera and the Pentax 645D being a Large SLR camera.

Before getting in to a complete comparison, below is a brief overview of how the GM5 matches up against the 645D with respect to portability, imaging, features and an overall rating.

Here is a preview of the gallery photos for Panasonic Lumix DMC-GM5 and Pentax 645D. The whole galleries are available at Panasonic GM5 Gallery and Pentax 645D Gallery.

For anyone who is aiming to carry your camera regularly, you'll need to consider its weight and size. The Panasonic GM5 has got physical measurements of 99mm x 60mm x 36mm (3.9" x 2.4" x 1.4") with a weight of 211 grams (0.47 lbs) and the Pentax 645D has specifications of 156mm x 117mm x 119mm (6.1" x 4.6" x 4.7") with a weight of 1480 grams (3.26 lbs).

Analyze the Panasonic GM5 and Pentax 645D in the new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will differ dependant on the lens you are utilising at that time. Here is the front view dimension comparison of the GM5 against the 645D.

Looking at size and weight, the portability score of the GM5 and 645D is 91 and 50 respectively.

Generally, its tough to picture the difference in sensor sizing simply by viewing technical specs. The photograph below will give you a more clear sense of the sensor sizing in the GM5 and 645D.

As you can tell, both the cameras offer different megapixel count and different sensor sizing. The GM5 with its smaller sensor is going to make shooting shallower depth of field tougher and the Pentax 645D will provide you with greater detail with its extra 24MP. Higher resolution will make it easier to crop pictures a little more aggressively. The more modern GM5 should have an edge in sensor innovation.