Super telephoto lens series walimex pro lens mounts leica m m39 lens speed 8 focal length 800 mm suitable for sensor type aps c construction prime lens area of use indoor photography travel photography animal photography focus manual focus af motor no internal af motor closest focusing distance 350 cm lens type aspherical lens construction groupselements 88 max aperture 8 lens switch none filter thread 35 mm coating multicoating mc leng