Sigma 500mm f45 APO EX DG HSM Nikon AF

This ultra telephoto lens has a fast maximum aperture, and also features a new super multi layer coating, which optimizes the characteristics of digital SLR cameras. Two ELD glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast.Coating reduces Ghost and FlareThe multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum colour balance.ELD Extra Low Dispersion glass elementsTwo ELD glass elements in the front lens elements reduce chromatic aberration to a minimum and also ensure sharp, quality images of high contrast. Rotatable drop in filterThe lens features a drop in 46mm filter holder in the rear part of the lens barrel, which can be rotated to facilitate the use of filters, including a polarizing filter.HSM Hyper Sonic MotorThe AF drive features Sigma's ultra quiet and high speed Hyper Sonic Motor HSM.Inner FocusInner focusing retains external dimensions for ease of handling.SpecificationLens Construction 12 Elements in 9 GroupsAngle of View 5 degreeNumber of Diaphragm Blades 9pcsMinimum Aperture F32Minimum Focusing Distance 400cmMaximum Magnification 17.7Filter Size 46mm drop in typeDimensions Diameter 123mm x Length 350mmWeight 3150g