Ideal for portraiture, the EF 135mm f/2L USM is a medium telephoto prime and a member of Canon's L-series of lenses. The long focal length coupled with the f/2 maximum aperture afford a great deal of control over depth of field for isolating subject matter and using selective focus, and the bright aperture also benefits Shoot-ing handheld in low-light conditions. In regard to the optical design, the lens uses two ultra-low dispersion elements to control chromatic aberrations and color fringing for high clarity, and a Super Spectra coating has also been applied to suppress flare and ghosting for increased contrast and color accuracy. Complementing the imaging attributes, a ring-type USM is employed to deliver quick and quiet autofocus performance along with full-time manual focus control. This 6AVE Bundle includes: Canon EF 135mm f/2L USM Lens 72mm 3 Piece Filter Kit Includes: UV, Circular Polarizer and Fluorescent Filter and Hard Case 72mm 1 2 4 10 Close-Up Macro Filter Set with Pouch (More Macro with ANY Lens!) 6-Piece 72mm Graduated Color Filter Kit Lens Cleaning SolutionBlower BrushMicrofiber ClothLens Tissue Paper5pc Cotton Swabs Lens Pen Cleaner SLR/DSLR Pro Hand Camera Grip