Small but powerful! Don't ever think the sensor bigger is better, it also depends on the algorithm and imaging engine performance
The Pentax Q series is a series of mirrorless interchangeable-lens cameras made by Pentax and introduced in 2011 with the initial model Pentax Q. As of September 2012, it is the world’s smallest, lightest interchangeable lens digital camera.
A newly designed back-illuminated CMOS image sensor with outstanding high-sensitivity, low-noise characteristics, the PENTAX Q10 delivers high-resolution, rich-gradation images with approximately 12.4 effective megapixels, and a top sensitivity of ISO 6400.
The small sensor size means that the Q series has a crop factor of 5.6× (or 4.7x for the Q7 and Q-S1) and a short flange focal distance (FFD). With the 5.6× crop factor, a 100 mm macro lens (for example) becomes a (35 mm equivalent) 560 mm extreme telephoto or an extreme close-up lens capable of 1:1 macro reproduction.
Flexibility
The short FFD of the Pentax Q series allows the use of third-party adapters to mount lenses from many manufacturers on the Pentax Q body, including Olympus OM, Canon FD, Minolta, M42 screw mount, C-Mount, D-Mount, Pentax K, and Pentax 6×7.
