Rollei 300mm f/4 Schneider Apo-Tele-Xenar PQ Telephoto Lens for SLX and 6000 Series Cameras

Fast telephoto with apochromatic correction, setting new standards in this class of lens. The Longar 1.4x telephoto-converter turns it into a super-telephoto system with a focal length of 420mm and a respectable f/5.6 maximum aperture.