EF-Mount Lens/Full-Frame Format – Aperture Range: f/14 to f/40 – Two Extra-Low Dispersion Elements – One Extra Refractive Index Element – Magnification: 2:1 to Infinity – Min. Focus: 1.5′; Working Distance: 0.8″ – Integrated Focus and Aperture Gears – Long Lens Barrel, Small Front Diameter – Built-In LED Ring Light, Micro-USB Power – Waterproof Front Lens Barrel