Nikon PC-E FX Micro NIKKOR 45mm f/2.8D ED Fixed Zoom Lens for Nikon DSLR Cameras Perspective control lens with 45mm focal length and f/2.8 maximum aperture Lets you shift, tilt, and rotate lens while you shoot for more interesting perspectives Shifting range of plus or minus 11.5mm; tilting range of plus or minus 8.5 degrees Revolves 90 degrees in either direction; built using Extra-low Dispersion glass elements Rounded 9-blade diaphragm; measures 3.2 inches in diameter and 4.4 inches long