Pentax Q-S1 vs Ricoh GXR Mount A12

On this page, we are matching up the Pentax Q-S1 and Ricoh GXR Mount A12, both Entry-Level Mirrorless cameras by companies Pentax and Ricoh. The resolution of the Q-S1 (12MP) and the GXR Mount A12 (12MP) is fairly close but the Q-S1 (1/1.7") and GXR Mount A12 (APS-C) posses totally different sensor dimensions.

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The Q-S1 was unveiled 3 years after the GXR Mount A12 which is a fairly big difference as far as camera technology is concerned. Both of these cameras have the same body design (Rangefinder-style mirrorless).

Before diving straight to a more detailed comparison, here is a quick synopsis of how the Q-S1 grades versus the GXR Mount A12 when considering portability, imaging, features and an overall score.

Following is a sample of the gallery pictures for Pentax Q-S1 & Ricoh GXR Mount A12. The full galleries are provided at Pentax Q-S1 Gallery & Ricoh GXR Mount A12 Gallery.

For those who are planning to carry around your camera frequently, you'll need to think about its weight and volume. The Pentax Q-S1 offers outside measurements of 105mm x 58mm x 34mm (4.1" x 2.3" x 1.3") with a weight of 203 grams (0.45 lbs) whilst the Ricoh GXR Mount A12 has sizing of 120mm x 70mm x 45mm (4.7" x 2.8" x 1.8") and a weight of 370 grams (0.82 lbs).

Take a look at the Pentax Q-S1 and Ricoh GXR Mount A12 in our completely new Camera plus Lens Size Comparison Tool.

Bear in mind, the weight of an ILC will change depending on the lens you have chosen at the time. Following is a front view measurements comparison of the Q-S1 versus the GXR Mount A12.

Using dimensions and weight, the portability rating of the Q-S1 and GXR Mount A12 is 92 and 84 respectively.

More often than not, its hard to envision the gap in sensor sizes simply by researching specifications. The image below might give you a far better sense of the sensor sizing in the Q-S1 and GXR Mount A12.

To sum up, the two cameras have the same megapixel count but not the same sensor sizes. The Q-S1 has the smaller sensor which is going to make getting shallower DOF more difficult. The more recent Q-S1 is going to have an advantage when it comes to sensor tech.