Panasonic GH5 vs Pentax K-3

In this article, we are looking at the Panasonic GH5 and Pentax K-3, former being a Pro Mirrorless while the other is a Advanced DSLR by rivals Panasonic and Pentax. The sensor resolution of the GH5 (20MP) and the K-3 (24MP) is very close but the GH5 (Four Thirds) and K-3 (APS-C) enjoy different sensor measurements.

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The GH5 was unveiled 2 years later than the K-3 and that is a fairly serious difference as far as camera technology is concerned. Both of the cameras offer different body type with the Panasonic GH5 being a SLR-style mirrorless camera and the Pentax K-3 being a Mid-size SLR camera.

Before we go straight into a in-depth comparison, below is a concise introduction of how the GH5 scores vs the K-3 when it comes to portability, imaging, features and an overall grade.

The following is a sample of the gallery pics for Panasonic Lumix DMC-GH5 & Pentax K-3. The full galleries are available at Panasonic GH5 Gallery & Pentax K-3 Gallery.

If you are going to lug around your camera often, you're going to have to factor its weight and dimensions. The Panasonic GH5 features exterior measurements of 139mm x 98mm x 87mm (5.5" x 3.9" x 3.4") along with a weight of 725 grams (1.60 lbs) while the Pentax K-3 has dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") having a weight of 800 grams (1.76 lbs).

See the Panasonic GH5 and Pentax K-3 in our brand new Camera plus Lens Size Comparison Tool.

Take into consideration, the weight of an ILC will vary dependant on the lens you select at that moment. Following is the front view measurement comparison of the GH5 versus the K-3.

Using dimensions and weight, the portability score of the GH5 and K-3 is 59 and 59 respectively.

Normally, it is very hard to visualize the gap in sensor measurements only by looking through a spec sheet. The graphic here should provide you a greater sense of the sensor sizing in the GH5 and K-3.

As you can see, both of those cameras enjoy different resolutions and different sensor measurements. The GH5 using its smaller sensor is going to make achieving bokeh trickier and the Pentax K-3 will provide you with greater detail having an extra 4MP. Greater resolution will make it easier to crop images far more aggressively. The younger GH5 should have an advantage with regard to sensor tech.