Super telephoto zoom lens series pentax hd dfa lens mount pentax k lens speed 45 focal length 150 450 mm zoom factor 3 times suitable for sensor types aps c full frame construction zoom lens area of use sports photography animal photography focus internal focus auto focus manual focus circular aperture max magnification 14 5 diagonal angle of view 16 5 5 5 diagonal angle of view 35mm 10 7 3 6 closest focusing distance 200 cm focal len