The Pentax Q-S1 is a rangefinder-styled digital mirrorless interchangeable lens camera announced by Ricoh under the Pentax brand on August 4, 2014. It replaces the Pentax Q7, and is part of Pentax' Q system, the most compact digital interchangeable lens camera system as of September 2014, with crop factors ranging from 4.6 (Q7, Q-S1) to 5.6 (Q, Q10).
The Q-S1 has in-body image stabilisation and flash built in, and offers 12 megapixel stills capture as well as FullHD video. In the US and Europe, the camera body is available in 36 made-to-order colour combinations in addition to four standard colours. Furthermore, the Pentax-01 8.5mm normal prime lens is also available in five different colours.