About this item Highlights EF-Mount Lens/Full-Frame Format Aperture Range: f/4 to f/22 One Super UD Element Three Aspherical Elements Optical Image Stabilization Super Spectra Coating Ring-Type Ultrasonic Motor AF System Optical Image Stabilizer Weather-Sealed Construction Features A versatile one-lens solution for many shooting situations, the EF 24-105mm f/4L IS USM Lens is a Canon L-series zoom spanning a useful wide-angle to short-telephoto range and featuring a constant f/4 maximum aperture. Complementing the flexible design is an advanced optical layout that includes one Super UD element, which reduces color fringing and chromatic aberrations in order to realize a high degree of color accuracy and clarity. Three aspherical elements are also featured, and minimize distortion and spherical aberrations for improved sharpness. Additionally, a Super Spectra coating has been applied to individual elements to control flare and ghosting for high contrast and neutral color fidelity. Balancing the refined optics, this 24-105mm f/4 also sports a ring-type USM and internal focusing mechanism to enable quick, quiet, and accurate autofocus performance, as well as full-time manual focus override. A four-stop-effective Image Stabilizer is also used to minimize the appearance of camera shake for sharper handheld shooting. Additionally, this lens is weather-sealed and has a protective fluorine coating on the exposed elements for use in trying environmental conditions. Standard zoom is designed for full-frame Canon EF-mount DSLRs, however can also be used with APS-C models where it provides a 38.4-168mm equivalent focal length range. Constant f/4 maximum aperture maintains consistent illumination throughout the zoom range. One Super Ultra-Low Dispersion element 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. An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to four shutter speed stops to better enable working in low-light conditions and with slower shutter speeds. A ring-type Ultrasonic Motor (USM), along with an internal focusing design, optimized focusing algorithms, and a high-speed CPU, is employed to deliver fast, precise, and quiet autofocus performance as well as full-time manual focus override. Rounded eight-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. Category: Lenses
