Pentax K-3 II vs Sony A7

Below is a complete analysis of the Pentax K-3 II vs Sony A7, former being a Advanced DSLR while the other is a Pro Mirrorless by brands Pentax and Sony. The resolution of the K-3 II (24MP) and the A7 (24MP) is very close but the K-3 II (APS-C) and A7 (Full frame) offer different sensor dimensions.

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The K-3 II was manufactured 16 months later than the A7 making them a generation apart from each other. Both the cameras feature different body design with the Pentax K-3 II being a Mid-size SLR camera and the Sony A7 being a SLR-style mirrorless camera.

Before getting into a step-by-step comparison, here is a simple highlight of how the K-3 II scores versus the A7 when considering portability, imaging, features and an overall grade.

Below is a sample of the gallery pics for Pentax K-3 II & Sony Alpha A7. The entire galleries are available at Pentax K-3 II Gallery & Sony A7 Gallery.

If you're going to lug around your camera, you need to think about its weight and measurements. The Pentax K-3 II offers 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 A7 has proportions of 127mm x 94mm x 48mm (5.0" x 3.7" x 1.9") along with a weight of 474 grams (1.04 lbs).

Check out the Pentax K-3 II vs Sony A7 in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will differ dependant on the lens you use at that moment. Following is a front view size comparison of the K-3 II against the A7.

Taking into account size and weight, the portability grade of the K-3 II and A7 is 59 and 78 respectively.

Usually, it can be difficult to imagine the gap in sensor measurements purely by researching a spec sheet. The photograph here will offer you a stronger sense of the sensor sizing in the K-3 II and A7.

As you can see, both the cameras come with the identical MP but different sensor measurements. The K-3 II has the smaller sensor which will make obtaining shallow DOF trickier. The newer K-3 II should have an advantage with regard to sensor technology.