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Focal Length: 18mm
Aperture: f/3.5~f/22
Range: 0.3~∞
The closest pick-up area: 290mm×440mm
Angle (diagonal / horizontal): 99 °/ 90 °
Lens construction: 11 groups 13
Filter size:82mm
Weight: 470g
Size: φ87mmx59mm
Mounts: ZF (Nikon F)
Accessories with bayonet lens shade can reverse star.