Telephoto zoom lens series pentax smc da lens mounts pentax k pentax kaf2 lens speed 4 focal length 60 250 mm zoom factor 41 times suitable for sensor type aps c construction zoom lens area of use close up photography landscape photography travel photography sports photography focus internal focus auto focus manual focus af motor ultrasonic motor usm reduced frame size max magnification 16 7 closest focusing distance 110 cm focal length equiva