EF-Mount Lens/Full-Frame Format
Aperture Range: f/4 to f/22
One Super Ultra-Low Dispersion Element
Three Aspherical Element
Spanning a versatile wide-angle range, the EF 17-40mm f/4L USM Lens is a Canon L-series zoom featuring a constant f/4 maximum aperture along with a sophisticated optical design and durable construction. One Super UD element is featured, along with three aspherical elements, which help to reduce both chromatic and spherical aberrations in order to realize high sharpness, clarity, and color accuracy. A Super Spectra coating has also been applied to suppress flare and ghosting for improved contrast in difficult lighting conditions. Complementing the imaging capabilities, this wide-angle zoom also features a ring-type USM and internal focusing mechanism to afford quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. Additionally, this lens is weather-sealed for use in trying environmental conditions.
EF-Mount Lens/Full-Frame Format Aperture Range: f/4 to f/22 One Super Ultra-Low Dispersion Element Three Aspherical Element
Canon EF 17-40mm f/4L USM Lens
Manufacturer Accessories:
Canon E-77 II 77mm Lens Cap
Canon Lens Dust Cap E (Rear Lens Cap)
Canon EW-83E Lens Hood for EF 16-35mm f/2.8L & 10-22mm EF-S Lens
Canon Lens Case LP1319
Bundle Includes:
77mm 3pc (Uv,CPL,FLD) Filter Kit
77mm 4pc HD Macro Close-up Filter Kit
3-Fold Memory Card Wallet
Ultimaxx High Speed SD/SDHC/Micro SD Reader/Card Reader
High Quality Dust Blower
High Quality Lens Cleaning Pen
Microfiber Cleaning Cloth