Pentax K-r vs Sony A58

In this write-up, we will be evaluating the Pentax K-r versus Sony A58, both Entry-Level DSLR digital cameras by manufacturers Pentax and Sony. There is a crucial difference between the sensor resolutions of the K-r (12MP) and A58 (20MP) but they enjoy the same exact sensor measurements (APS-C).

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The K-r was announced 3 years prior to the A58 and that is quite a serious gap as far as tech is concerned. Both of the cameras offer the identical body type (Compact SLR).

Before diving through a step-by-step comparison, below is a short highlight of how the K-r matches up against the A58 with regard to portability, imaging, features and an overall rating.

The following is a preview of the gallery images for Pentax K-r and Sony SLT-A58. The whole galleries are available at Pentax K-r Gallery and Sony A58 Gallery.

For anybody who is going to carry your camera regularly, you'll have to think about its weight and volume. The Pentax K-r provides external dimensions of 125mm x 97mm x 68mm (4.9" x 3.8" x 2.7") along with a weight of 598 grams (1.32 lbs) and the Sony A58 has sizing of 129mm x 95mm x 78mm (5.1" x 3.7" x 3.1") and a weight of 492 grams (1.08 lbs).

Examine the Pentax K-r versus Sony A58 in the all new Camera with Lens Size Comparison Tool.

Remember, the weight of an Interchangeable Lens Camera will differ depending on the lens you select at that moment. The following is the front view dimensions comparison of the K-r vs the A58.

Factoring in size and weight, the portability score of the K-r and A58 is 67 and 68 respectively.

Oftentimes, its difficult to envision the difference between sensor sizing just by looking at a spec sheet. The graphic here will help give you a far better sense of the sensor dimensions in the K-r and A58.

Clearly, the two cameras offer the same exact sensor sizing albeit not the same megapixels. You should expect the Sony A58 to resolve greater detail with its extra 8MP. Higher resolution will allow you to crop shots a little more aggressively. The older K-r is going to be behind with regard to sensor technology.