Pentax Q-S1 vs Sony A99

Below is a in-depth assessment of the Pentax Q-S1 and Sony A99, one being a Entry-Level Mirrorless and the latter is a Advanced DSLR by competitors Pentax and Sony. There exists a big gap between the resolutions of the Q-S1 (12MP) and A99 (24MP) and the Q-S1 (1/1.7") and A99 (Full frame) offer totally different sensor measurements.

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The Q-S1 was announced 20 months later than the A99 which makes them a generation apart from one another. Both the cameras have different body design with the Pentax Q-S1 being a Rangefinder-style mirrorless camera and the Sony A99 being a Mid-size SLR camera.

Before delving right into a more detailed comparison, here is a concise overview of how the Q-S1 scores vs the A99 in terms of portability, imaging, features and an overall grade.

Following is a preview of the gallery photos for Pentax Q-S1 and Sony SLT-A99. The whole galleries are viewable at Pentax Q-S1 Gallery and Sony A99 Gallery.

If you're planning to lug around your camera often, you are going to need to think about its weight and volume. The Pentax Q-S1 features exterior dimensions of 105mm x 58mm x 34mm (4.1" x 2.3" x 1.3") having a weight of 203 grams (0.45 lbs) and the Sony A99 has sizing of 147mm x 111mm x 78mm (5.8" x 4.4" x 3.1") and a weight of 812 grams (1.79 lbs).

Compare the Pentax Q-S1 and Sony A99 in the latest Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will change based on the lens you are employing at that time. Following is a front view physical size comparison of the Q-S1 compared to the A99.

Taking into account dimensions and weight, the portability rating of the Q-S1 and A99 is 92 and 57 respectively.

More often than not, it is hard to visualise the contrast between sensor measurements purely by reading through specs. The photograph here will help give you a far better sense of the sensor dimensions in the Q-S1 and A99.

As you can plainly see, the two cameras provide different megapixel count and different sensor measurements. The Q-S1 using its tinier sensor will make achieving shallow DOF trickier and the Sony A99 will resolve greater detail with its extra 12MP. Higher resolution will also allow you to crop pictures more aggressively. The newer Q-S1 is going to have an edge in sensor technology.