Features: 85mm focal length, F1.8 large aperture 7 groups of 10 optical structures, including 1 ED lens and 4 low-wave high-lens lenses Hd nano multi-layer coating, front lens waterproof and antifouling coating Electronic aperture, inner focus, constant lens length The quiet STM focusing motor Precision metal structure Specification: Color: black Material: Optical glass+Aluminium alloy Focal length: 85mm(about 130mm) Aperture: F1.8 - f16 Number of aperture blades: 9 Camera Mount: x-mount Format compatibility: aps-c Beat distance: 08M(31.50") -infinity Viewing Angle: (diagonal/horizontal/vertical) 19 ° 15 ° 14 '/ /' 11 ° 32 ' AF(IF) Image field diameter: 28.2mm(1.11") Close range coverage: (MOD) :125*188mm(4.92x7.4 ") Image ratio on minimum object distance: 1:8 Lens structure: 10/7 Flange distance: 17.7mm(0.7") Pupil position: 10mm(0.39") Auto focus: support (peak + phase) Image stability: support the body anti - shake Automatic aperture: electronic automatic aperture EXIF information: support Filter specification: M72*0.75 The focusing ring rotation Angle: 360 ° Maximum diameter: 80mm(3.15") Diameter of focusing ring :80mm(3.15") Length (with lens cover) : 100MM(3.94") Length (without lens cover) : 92mm(3.62") Weight: Approx. 1018g Package List: 1 x Lens 1 x Lens front cover 1 x Lens back cover 1 x Lens hood 1 x Manual 1 x Storage bag