Pentax K100D vs Sony A9 II

Lets look a little more in depth at the Pentax K100D and Sony A9 II, former is a Entry-Level DSLR while the other is a Pro Mirrorless by rivals Pentax and Sony. There is a considerable difference among the sensor resolutions of the K100D (6MP) and A9 II (24MP) and the K100D (APS-C) and A9 II (Full frame) boast totally different sensor sizes.

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The K100D was brought out 14 years prior to the A9 II which is a fairly large difference as far as camera tech is concerned. The two cameras have different body design with the Pentax K100D being a Compact SLR camera and the Sony A9 II being a SLR-style mirrorless camera.

Before diving right into a full comparison, here is a brief view of how the K100D matches up versus the A9 II in the way of portability, imaging, features and an overall mark.

Following is a sample of the gallery pictures for Pentax K100D & Sony Alpha A9 Mark II. The entire galleries are viewable at Pentax K100D Gallery & Sony A9 II Gallery.

For anyone who is looking to travel with your camera often, you will want to take into account its weight and dimensions. The Pentax K100D has got exterior measurements of 129mm x 93mm x 70mm (5.1" x 3.7" x 2.8") with a weight of 660 grams (1.46 lbs) and the Sony A9 II has dimensions of 129mm x 96mm x 76mm (5.1" x 3.8" x 3.0") along with a weight of 678 grams (1.49 lbs).

Check the Pentax K100D and Sony A9 II in our newest Camera & Lens Size Comparison Tool.

Remember that, the weight of an ILC will vary based on the lens you are utilizing at that moment. Here is a front view sizing comparison of the K100D against the A9 II.

Factoring in size and weight, the portability grade of the K100D and A9 II is 64 and 62 respectively.

In many cases, it is tough to visualise the gap in sensor dimensions just by viewing a spec sheet. The picture below will offer you a much better sense of the sensor measurements in the K100D and A9 II.

As you can see, both of those cameras have different megapixels and different sensor dimensions. The K100D featuring a smaller sensor will make getting shallow DOF harder and the Sony A9 II will result in greater detail having its extra 18MP. Greater resolution will also let you crop pics a bit more aggressively. The more aged K100D will be behind with regard to sensor tech.