Super telephoto zoom lens series samyang if mc lens mount t2 lens speed 8 focal length 650 1 300 mm suitable for sensor type aps c construction zoom lens area of use close up photography animal photography focus manual focus auto focus af motor no internal af motor closest focusing distance 500 cm lens construction groupselements 58 minimum aperture 8 max aperture 16 lens switch afmf filter thread 95 mm coating multicoating mc weight