Canon MP-E 65mm f/2.8 1-5x Macro Photo Lens

EF-Mount Lens/Full-Frame Format Aperture Range: f/2.8 to f/16 One Ultra-Low Dispersion Lens Element Super Spectra Coating 1:1 to 5:1 Magnification, 9.4" Min Focus Manual Focus Operation Three-Group Floating Element System Detachable, Rotatable Tripod Collar 6-Blade Diaphragm Compatible with Macro Ring or Twin Lites