Savage Macro Art Extension Tube for Nikon F MountSavageマクロアートニコン Fマウント用ですProduct Highlights:Shortens Minimum Focus of LensGreater Magnification for Macro ShootingVariable Extension Adjustment: 55-71mmMaintains Autofocus and ExposureInternal Matting Reduces ReflectionsGold-Plated Contacts, Copper BayonetShortening the minimum focusing distance of your Nikon F lens while also increasing the magnification for macro shooting, this Savage Macro Art Extension Tube offers a variable extension range of 55-71mm for fine-tuned control of the lens-to-sensor distance. It also maintains full autofocus and exposure metering capabilities via the integrated gold-plated contacts. The bayonet mounts are constructed from a copper alloy for secure and accurate mounting of the lens and to the camera and the all-metal tube"s interior is matted in order to prevent unwanted reflections or flare.