Pentax K-3 vs Sony A6100

In this article, we are contrasting the Pentax K-3 versus Sony A6100, one being a Advanced DSLR and the other is a Advanced Mirrorless by rivals Pentax and Sony. The sensor resolution of the K-3 (24MP) and the A6100 (24MP) is very close and they come with the same exact sensor size (APS-C).

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The K-3 was introduced 6 years earlier than the A6100 and that is a fairly serious gap as far as camera tech is concerned. Each of these cameras offer different body type with the Pentax K-3 being a Mid-size SLR camera and the Sony A6100 being a Rangefinder-style mirrorless camera.

Before getting straight into a full comparison, below is a simple synopsis of how the K-3 grades against the A6100 when it comes to portability, imaging, features and an overall grade.

Here is a sample of the gallery pics for Pentax K-3 and Sony Alpha a6100. The whole galleries are provided at Pentax K-3 Gallery and Sony A6100 Gallery.

In case you're aiming to lug around your camera, you will need to factor its weight and proportions. The Pentax K-3 comes with physical measurements of 131mm x 100mm x 77mm (5.2" x 3.9" x 3.0") having a weight of 800 grams (1.76 lbs) while the Sony A6100 has measurements of 120mm x 67mm x 59mm (4.7" x 2.6" x 2.3") having a weight of 396 grams (0.87 lbs).

Analyze the Pentax K-3 versus Sony A6100 in the new Camera and Lens Size Comparison Tool.

Bear in mind, the weight of an Interchangeable Lens Camera will differ dependant on the lens you use at that moment. Underneath is the front view sizing comparison of the K-3 and the A6100.

Looking at size and weight, the portability score of the K-3 and A6100 is 59 and 81 respectively.

Usually, it's hard to visualise the gap in sensor measurements only by researching specs. The graphic below will help give you a greater sense of the sensor sizing in the K-3 and A6100.

All in all, both of the cameras enjoy the same exact sensor sizing and the same exact MP therefore you should expect comparable quality of pictures but you should always consider the production date of the cameras into account. The older K-3 will be behind with regard to sensor innovation.