Pentax Q-S1 vs Sony A9

The following is a in-depth comparison of the Pentax Q-S1 vs Sony A9, one is a Entry-Level Mirrorless and the latter is a Pro Mirrorless by brands Pentax and Sony. There exists a huge gap among the sensor resolutions of the Q-S1 (12MP) and A9 (24MP) and the Q-S1 (1/1.7") and A9 (Full frame) enjoy totally different sensor sizing.

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The Q-S1 was introduced 3 years prior to the A9 which is a fairly significant gap as far as camera technology is concerned. Both of the cameras offer different body type with the Pentax Q-S1 being a Rangefinder-style mirrorless camera and the Sony A9 being a SLR-style mirrorless camera.

Before going in to a step-by-step comparison, below is a simple synopsis of how the Q-S1 matches up vs the A9 with respect to portability, imaging, features and an overall mark.

The following is a preview of the gallery photos for Pentax Q-S1 and Sony Alpha A9. The whole galleries are available at Pentax Q-S1 Gallery and Sony A9 Gallery.

For anyone who is looking to travel with your camera regularly, you will want to factor in its weight and measurements. The Pentax Q-S1 enjoys outside measurements of 105mm x 58mm x 34mm (4.1" x 2.3" x 1.3") along with a weight of 203 grams (0.45 lbs) while the Sony A9 has proportions of 127mm x 96mm x 63mm (5.0" x 3.8" x 2.5") along with a weight of 673 grams (1.48 lbs).

Look at the Pentax Q-S1 vs Sony A9 in the new Camera and Lens Size Comparison Tool.

Keep in mind, the weight of an Interchangeable Lens Camera will vary dependant on the lens you are employing at that time. Here is the front view dimension comparison of the Q-S1 compared to the A9.

Using dimensions and weight, the portability grade of the Q-S1 and A9 is 92 and 65 respectively.

Normally, it's hard to see the gap in sensor dimensions simply by looking through specifications. The image below may provide you a better sense of the sensor sizing in the Q-S1 and A9.

To sum up, the 2 cameras offer different resolutions and different sensor dimensions. The Q-S1 using its smaller sensor will make achieving shallower depth of field tougher and the Sony A9 will result in greater detail using its extra 12MP. Higher resolution will make it easier to crop pictures a little more aggressively. The more aged Q-S1 will be disadvantaged in sensor tech.