Canon EF 17-40mm f/4L USM Ultra-Wide Zoom Lens (used)
Canon EF 17-40mm f/4L USM Ultra-Wide Zoom Lens (used)
Canon EF 17-40mm f/4L USM
Highlights
- EF-Mount Lens/Full-Frame Format
- Aperture Range: f/4 to f/22
- One Super Ultra-Low Dispersion Element
- Three Aspherical Element
- Super Spectra Coating
- Ring-Type Ultrasonic Motor AF System
- Weather-Sealed Construction
- Rounded 7-Blade Diaphragm
Features
Wide-angle zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 27.2-64mm equivalent focal length range.
Constant f/4 maximum aperture maintains consistent illumination throughout the zoom range.
One Super Ultra-Low Dispersion glass element noticeably reduces color fringing and chromatic aberrations for high clarity and color fidelity.
Three aspherical elements minimize spherical aberrations and distortions for improved sharpness and accurate rendering.
Super Spectra coating has been applied to individual elements to minimize ghosting and flare for greater contrast and color neutrality when working in strong lighting conditions.
A ring-type Ultrasonic Motor (USM), along with an internal focusing system, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override.
Rounded seven-blade diaphragm contributes to a pleasing out of focus quality that benefits the use of shallow depth of field and selective focus techniques.
As a member of the esteemed L-series, this lens is sealed against dust and moisture for working in inclement environmental conditions.
In addition to the front 77mm filter ring, this lens also has a rear filter holder for up to three cut gel filters.
Condition: (used) very clean, no scratches, clean glassÂ
Â
Include: lens 17-40mm , both lens cover, lens hood Â
Â