Pentax K-3 vs Sony A77

Its time to look a little more in depth at the Pentax K-3 and Sony A77, both Advanced DSLR cameras by rivals Pentax and Sony. The sensor resolution of the K-3 (24MP) and the A77 (24MP) is very comparable and they feature the exact same sensor dimensions (APS-C).

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The K-3 was released 2 years after the A77 which is a fairly significant gap as far as camera tech is concerned. Both of these cameras come with the identical body type (Mid-size SLR).

Before getting in to a full comparison, below is a brief overview of how the K-3 grades against the A77 with regards to portability, imaging, features and an overall mark.

Below is a sample of the gallery pics for Pentax K-3 and Sony SLT-A77. The complete galleries are available at Pentax K-3 Gallery and Sony A77 Gallery.

When you are going to travel with your camera frequently, you'll need to factor in its weight and size. The Pentax K-3 enjoys external dimensions of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") and a weight of 800 grams (1.76 lbs) whilst the Sony A77 has specifications of 143mm x 104mm x 81mm (5.6" x 4.1" x 3.2") having a weight of 732 grams (1.61 lbs).

Contrast the Pentax K-3 and Sony A77 in the new Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change dependant on the lens you have at that time. Underneath is the front view measurement comparison of the K-3 compared to the A77.

Considering size and weight, the portability rating of the K-3 and A77 is 59 and 59 respectively.

Usually, it's difficult to visualise the gap in sensor dimensions purely by checking out specs. The picture underneath will provide you a better sense of the sensor sizes in the K-3 and A77.

As you can plainly see, both of these cameras posses the exact same sensor measurements and the same exact MP and you should expect comparable quality of photos though you should consider the production date of the cameras into account. The fresher K-3 is going to have a benefit with regard to sensor innovation.