Panasonic GM5 vs Pentax K-3

Here, we are comparing the Panasonic GM5 and Pentax K-3, one being a Entry-Level Mirrorless and the other is a Advanced DSLR by rivals Panasonic and Pentax. There exists a sizeable gap between the sensor resolutions of the GM5 (16MP) and K-3 (24MP) and the GM5 (Four Thirds) and K-3 (APS-C) posses different sensor dimensions.

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The GM5 was introduced 6 months later than the K-3 which means that they are both of a similar generation. Both of these cameras feature different body design with the Panasonic GM5 being a Rangefinder-style mirrorless camera and the Pentax K-3 being a Mid-size SLR camera.

Before going straight to a in-depth comparison, here is a quick highlight of how the GM5 scores against the K-3 when considering portability, imaging, features and an overall rating.

Following is a sample of the gallery pictures for Panasonic Lumix DMC-GM5 and Pentax K-3. The whole galleries are provided at Panasonic GM5 Gallery and Pentax K-3 Gallery.

If you are looking to carry your camera regularly, you're going to have to factor in its weight and proportions. The Panasonic GM5 has got physical measurements of 99mm x 60mm x 36mm (3.9" x 2.4" x 1.4") along with a weight of 211 grams (0.47 lbs) whilst the Pentax K-3 has measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") along with a weight of 800 grams (1.76 lbs).

Analyze the Panasonic GM5 and Pentax K-3 in the new Camera and Lens Size Comparison Tool.

Remember that, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at that moment. The following is a front view size comparison of the GM5 and the K-3.

Taking into account dimensions and weight, the portability rating of the GM5 and K-3 is 91 and 59 respectively.

Normally, it can be difficult to picture the gap between sensor sizing simply by going over a spec sheet. The photograph here might offer you a more clear sense of the sensor measurements in the GM5 and K-3.

As you can see, both the cameras feature different resolutions and different sensor sizing. The GM5 having a tinier sensor is going to make getting shallower depth of field harder and the Pentax K-3 will offer more detail using its extra 8MP. Greater resolution will also allow you to crop images way more aggressively.