Fisheye lens angle of view 180 series samyang vdslr samyang umc lens mount sony e mount lens speed 31 focal length 8 mm suitable for sensor type aps c construction prime lens area of use videography landscape photography close up photography focus manual focus af motor no internal af motor circular aperture closest focusing distance 30 cm focal length equivalent to 35mm camera 8 mm lens construction groupselements 811 minimum aperture 22 max