Canon EF 17-40mm f/4L USM Super Wide Angle Zoom 10x High Definition 2 Element Close-Up (Macro) Lens (77mm)

+10 Close-Up (Macro) lens made for the Canon EF 17-40mm f/4L USM. Offers High Definition (Beveled Design) optics and High-Index / Low-Dispersion 2 Element Optical Glass to enhance sharpness and minimize chromatic aberration. Optical surfaces are Fully Multi-Coated & Threaded Anti-Reflection Coating to reduce flare and improve contrast. Easily attaches to the lens listed in the title.