The S2 provides an entry into the world of system cameras with interchangeable lenses. Its autofocus measures the picture contrast and additionally works with the phase-change process. With this functionality, the camera rapidly focuses on scenes in motion, allowing for up to 20 pictures per second. Both the camera and the appropriate lens are small and comfortably lightweight at 230 grams and 83 grams respectively. The minimalist form underscores its convenient handling.