Super telephoto zoom lens series walimex pro lens mount c mount lens speed 8 focal length 650 1 300 mm zoom factor 2 times construction zoom lens area of use animal photography focus manual focus internal focus af motor no internal af motor closest focusing distance 500 cm lens construction groupselements 58 minimum aperture 16 max aperture 8 filter thread 95 mm length 463 mm lens diameter 105 weight 2 000 g included in delivery lens