Pentax K-5 II vs Sony A7 III

The following is a detailed overview of the Pentax K-5 II vs Sony A7 III, one is a Advanced DSLR and the latter is a Pro Mirrorless by rivals Pentax and Sony. There is a huge difference between the sensor resolutions of the K-5 II (16MP) and A7 III (24MP) and the K-5 II (APS-C) and A7 III (Full frame) posses different sensor sizes.

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The K-5 II was launched 5 years prior to the A7 III which is quite a significant gap as far as tech is concerned. Both of the cameras have different body design with the Pentax K-5 II being a Mid-size SLR camera and the Sony A7 III being a SLR-style mirrorless camera.

Before diving right into a comprehensive comparison, here is a quick summary of how the K-5 II matches up vs the A7 III with regards to portability, imaging, features and an overall mark.

Here is a preview of the gallery images for Pentax K-5 II and Sony Alpha A7 III. The complete galleries are viewable at Pentax K-5 II Gallery and Sony A7 III Gallery.

For anyone who is planning to travel with your camera frequently, you will need to factor its weight and proportions. The Pentax K-5 II features external measurements of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") having a weight of 760 grams (1.68 lbs) while the Sony A7 III has measurements of 127mm x 96mm x 74mm (5.0" x 3.8" x 2.9") having a weight of 650 grams (1.43 lbs).

Check the Pentax K-5 II vs Sony A7 III in the new Camera and Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you are employing at that time. Following is a front view overall size comparison of the K-5 II and the A7 III.

Taking into account size and weight, the portability rating of the K-5 II and A7 III is 60 and 63 respectively.

Usually, it is very difficult to imagine the gap between sensor dimensions purely by going over specifications. The pic underneath may provide you a much better sense of the sensor measurements in the K-5 II and A7 III.

To sum up, the 2 cameras have different resolutions and different sensor dimensions. The K-5 II because of its tinier sensor is going to make shooting shallower DOF more difficult and the Sony A7 III will offer you greater detail utilizing its extra 8MP. Higher resolution can also make it easier to crop pictures a bit more aggressively. The more aged K-5 II is going to be behind with regard to sensor technology.