Panasonic G5 vs Pentax 645Z

Lets look closer at the Panasonic G5 vs Pentax 645Z, one being a Entry-Level Mirrorless and the other is a Pro DSLR by companies Panasonic and Pentax. There exists a significant gap among the sensor resolutions of the G5 (16MP) and 645Z (51MP) and the G5 (Four Thirds) and 645Z (Medium format) come with totally different sensor sizes.

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The G5 was manufactured 21 months earlier than the 645Z making the cameras a generation apart from one another. The two cameras offer different body type with the Panasonic G5 being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before going straight into a complete comparison, below is a brief overview of how the G5 grades vs the 645Z with regards to portability, imaging, features and an overall grade.

Below is a sample of the gallery pictures for Panasonic Lumix DMC-G5 and Pentax 645Z. The entire galleries are available at Panasonic G5 Gallery and Pentax 645Z Gallery.

In case you're going to lug around your camera frequently, you'll need to consider its weight and proportions. The Panasonic G5 has got exterior measurements of 120mm x 83mm x 71mm (4.7" x 3.3" x 2.8") accompanied by a weight of 396 grams (0.87 lbs) and 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).

Analyze the Panasonic G5 vs Pentax 645Z in the new Camera with Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ based on the lens you select at that time. The following is the front view measurements comparison of the G5 vs the 645Z.

Looking at dimensions and weight, the portability rating of the G5 and 645Z is 74 and 49 respectively.

Typically, it's difficult to visualise the difference in sensor measurements just by checking out a spec sheet. The graphic underneath may provide you a stronger sense of the sensor measurements in the G5 and 645Z.

As you can see, the 2 cameras offer different megapixel count and different sensor measurements. The G5 because of its smaller sensor will make shooting shallower DOF more challenging and the Pentax 645Z will provide extra detail due to its extra 35MP. Greater resolution will enable you to crop pics a little more aggressively. The older G5 will be behind with regard to sensor innovation.