Pentax K-S1 vs Sony A77

In this article, we are matching up the Pentax K-S1 versus Sony A77, both Advanced DSLR cameras by companies Pentax and Sony. The resolution of the K-S1 (20MP) and the A77 (24MP) is very comparable and they use the same exact sensor sizes (APS-C).

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The K-S1 was brought out 2 years later than the A77 and that is a fairly sizable gap as far as camera tech is concerned. Each of the cameras offer the identical body type (Mid-size SLR).

Before getting in to a in depth comparison, below is a quick introduction of how the K-S1 matches up against the A77 when considering portability, imaging, features and an overall grade.

Here is a sample of the gallery pics for Pentax K-S1 and Sony SLT-A77. The entire galleries are available at Pentax K-S1 Gallery and Sony A77 Gallery.

In case you're planning to lug around your camera, you'll have to take into account its weight and measurements. The Pentax K-S1 enjoys external dimensions of 121mm x 93mm x 70mm (4.8" x 3.7" x 2.8") accompanied by a weight of 558 grams (1.23 lbs) whilst the Sony A77 has proportions of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 732 grams (1.61 lbs).

Check out the Pentax K-S1 versus Sony A77 in the latest Camera and Lens Size Comparison Tool.

Always remember, the weight of an Interchangeable Lens Camera will differ based on the lens you are working with at that moment. The following is the front view physical size comparison of the K-S1 and the A77.

Factoring in size and weight, the portability rating of the K-S1 and A77 is 69 and 59 respectively.

Generally, it can be tough to imagine the gap in sensor measurements only by seeing specifications. The visual underneath might give you a greater sense of the sensor dimensions in the K-S1 and A77.

To sum up, both of those cameras offer the same exact sensor sizing but different MP. You should expect to see the Sony A77 to provide extra detail having its extra 4MP. Greater resolution can also enable you to crop pics a little more aggressively. The more modern K-S1 provides an advantage with regard to sensor technology.