Panasonic GX850 vs Pentax 645Z

Below, we will be comparing the Panasonic GX850 vs Pentax 645Z, one being a Entry-Level Mirrorless and the latter is a Pro DSLR by rivals Panasonic and Pentax. There is a crucial difference between the sensor resolutions of the GX850 (16MP) and 645Z (51MP) and the GX850 (Four Thirds) and 645Z (Medium format) come with different sensor measurements.

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The GX850 was revealed 2 years later than the 645Z and that is quite a serious gap as far as tech is concerned. Both of these cameras come with different body type with the Panasonic GX850 being a Rangefinder-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before delving in to a detailed comparison, below is a quick view of how the GX850 grades against the 645Z when considering portability, imaging, features and an overall rating.

The following is a preview of the gallery images for Panasonic Lumix DMC-GX850 and Pentax 645Z. The full galleries are viewable at Panasonic GX850 Gallery and Pentax 645Z Gallery.

For anyone who is looking to carry your camera frequently, you should consider its weight and dimensions. The Panasonic GX850 has exterior measurements of 107mm x 65mm x 33mm (4.2" x 2.6" x 1.3") with a weight of 269 grams (0.59 lbs) whilst the Pentax 645Z has dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") with a weight of 1550 grams (3.42 lbs).

Contrast the Panasonic GX850 vs Pentax 645Z in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will vary depending on the lens you are working with at that moment. Following is the front view scale comparison of the GX850 compared to the 645Z.

Taking into consideration size and weight, the portability rating of the GX850 and 645Z is 90 and 49 respectively.

Generally, it's hard to picture the gap between sensor sizing merely by reading through specifications. The graphic underneath should provide you a clearer sense of the sensor sizing in the GX850 and 645Z.

Plainly, both of the cameras have got different resolutions and different sensor sizing. The GX850 having a tinier sensor is going to make achieving shallower depth of field trickier and the Pentax 645Z will give you more detail because of its extra 35MP. Higher resolution can also let you crop pictures much more aggressively. The more recent GX850 provides a benefit when it comes to sensor innovation.