Pentax K-5 vs Sony A57

On this page, we are analyzing the Pentax K-5 vs Sony A57, one is a Advanced DSLR and the other is a Entry-Level DSLR by manufacturers Pentax and Sony. The sensor resolution of the K-5 (16MP) and the A57 (16MP) is fairly similar and both cameras have the same sensor size (APS-C).

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The K-5 was manufactured 21 months prior to the A57 making them a generation away from each other. Each of these cameras have different body design with the Pentax K-5 being a Mid-size SLR camera and the Sony A57 being a Compact SLR camera.

Before diving straight to a more detailed comparison, here is a brief view of how the K-5 grades vs the A57 in the way of portability, imaging, features and an overall mark.

Here is a sample of the gallery pictures for Pentax K-5 and Sony SLT-A57. The entire galleries are viewable at Pentax K-5 Gallery and Sony A57 Gallery.

If you are going to travel with your camera frequently, you will want to factor its weight and measurements. The Pentax K-5 has got exterior dimensions of 131mm x 97mm x 73mm (5.2" x 3.8" x 2.9") accompanied by a weight of 740 grams (1.63 lbs) while the Sony A57 has proportions of 132mm x 98mm x 81mm (5.2" x 3.9" x 3.2") having a weight of 618 grams (1.36 lbs).

Examine the Pentax K-5 vs Sony A57 in the all new Camera and Lens Size Comparison Tool.

Take into consideration, the weight of an Interchangeable Lens Camera will change based on the lens you are working with at the time. The following is a front view measurement comparison of the K-5 compared to the A57.

Factoring in size and weight, the portability grade of the K-5 and A57 is 60 and 64 respectively.

Often, it is difficult to visualise the contrast between sensor dimensions just by reviewing a spec sheet. The pic here might provide you a better sense of the sensor dimensions in the K-5 and A57.

As you can see, both cameras have the same sensor dimensions and the same exact resolution therefore you should expect similar quality of photos however you will want to consider the production date of the products into consideration. The more aged K-5 is going to be disadvantaged with regard to sensor innovation.