Panasonic GH5 vs Pentax 645Z

Here is a detailed comparison of the Panasonic GH5 vs Pentax 645Z, one being a Pro Mirrorless and the other is a Pro DSLR by manufacturers Panasonic and Pentax. There exists a crucial gap between the image resolutions of the GH5 (20MP) and 645Z (51MP) and the GH5 (Four Thirds) and 645Z (Medium format) use different sensor measurements.

Photography Glossary

The GH5 was revealed 2 years later than the 645Z and that is quite a serious gap as far as technology is concerned. Each of these cameras come with different body type with the Panasonic GH5 being a SLR-style mirrorless camera and the Pentax 645Z being a Large SLR camera.

Before getting straight into a step-by-step comparison, below is a concise summation of how the GH5 matches up versus the 645Z in relation to portability, imaging, features and an overall rating.

The following is a sample of the gallery pics for Panasonic Lumix DMC-GH5 and Pentax 645Z. The full galleries are available at Panasonic GH5 Gallery and Pentax 645Z Gallery.

For anyone who is looking to carry your camera regularly, you will need to think about its weight and dimensions. The Panasonic GH5 comes with outside measurements of 139mm x 98mm x 87mm (5.5" x 3.9" x 3.4") accompanied by a weight of 725 grams (1.60 lbs) and the Pentax 645Z has dimensions of 156mm x 117mm x 123mm (6.1" x 4.6" x 4.8") accompanied by a weight of 1550 grams (3.42 lbs).

Take a look at the Panasonic GH5 vs Pentax 645Z in the latest Camera and Lens Size Comparison Tool.

Don't forget, the weight of an Interchangeable Lens Camera will vary based on the lens you are working with at that time. Here is the front view physical size comparison of the GH5 compared to the 645Z.

Considering dimensions and weight, the portability score of the GH5 and 645Z is 59 and 49 respectively.

Typically, it is very tough to visualize the difference between sensor sizing just by looking at specs. The visual below should offer you a clearer sense of the sensor sizing in the GH5 and 645Z.

All in all, the two cameras posses different megapixel count and different sensor sizing. The GH5 with its tinier sensor is going to make shooting bokeh tougher and the Pentax 645Z will give more detail because of its extra 31MP. Greater resolution will also allow you to crop pics somewhat more aggressively. The more recent GH5 provides an advantage in sensor innovation.