SLR Magic's CINE 1828FE lens is a wide angle lens ideal for general photography and cinematography. A fast F stop of F2.8 of/ering a 18mm and designed for Sony's E & FE Mount cameras exclusively.The solid metal construction houses ten aperture blades giving a beautiful bokeh and a de-clicked aperture control (aperture measured in T-stops and this is the actual available light measurement). The aperture can therefore be set step-lessly and silently, which allows soft transitions in luminance.- Focal Length: 18mm- Lens Mount: Sony E- Format: Full Frame- Maximum F-Stop: f/2.8- Minimum F-Stop: f/16- Minimum Focus Distance from Image Plane: 0.66' / 0.2 m- Optical Design: 10 Elements in 8 Groups- Iris Blades: 9- Gear MOD & Pitch:Focus: 0.8 MOD / 32 PitchIris: 0.8 MOD / 32 Pitch- Filter Thread: 62 mm- Focus Scales: Metric, Imperial- Electronic Communication: No- Tripod Mounting Thread: None- Dimensions (W x H): 66 x 66 mm- Length: 61 mm- Weight: 445.0 gIn the Box:- Lens ( SLR-1828FE )- Lens cap- Lens back cap