Super telephoto lens series walimex pro lens mount sony e mount lens speed 8 focal length 500 mm suitable for sensor type aps c construction prime lens area of use close up photography animal photography focus manual focus af motor no internal af motor reduced frame size closest focusing distance 1 000 cm lens type aspherical lens construction groupselements 44 number of aperture blades 7 minimum aperture 32 max aperture 8 filter thread 67