• Super telephoto prime is designed for full-frame Canon EF-mount DSLRs, however, can also be used with APS-C models where it provides a 640mm equivalent focal length.
• Fast f/2.8 maximum aperture benefits working in low-light conditions and also affords significant control over the depth of field for working with selective focus techniques.
• Super UD. and Fluorite Elements are used to greatly reduce color fringing and chromatic aberrations in order to achieve greater clarity and color accuracy.
• Super Spectra, and Air Sphere Coatings have been applied to individual elements to control lens flare and ghosting for greater contrast and color fidelity when working in strong lighting conditions.
• An Optical Image Stabilizer helps to minimize the appearance of camera shake by up to five shutter speed stops to better enable working in low-light conditions and with slower shutter speeds. Three distinct IS modes are available: standard single-shot mode, a panning-optimized mode, and a mode that only activates the Image Stabilizer during the exposure.
• A ring-type Ultrasonic Motor (USM), along with 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.
• Customizable electronic focusing ring provides three sensitivity levels for how quickly and precisely the lens can manually focus.
• Focus Preset function is available to quickly recall a programmed focusing position.
• Rounded nine-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 and also features a fluorine coating on the front and rear elements to guard against water spots, smudges, or oil residue.
• Removable rotating tripod collar is included and benefits working with the lens atop a tripod or monopod.
• Compatible with optional EF 1.4X, and EF 2X teleconverters.

• EF-Mount Lens/Full-Frame Format
• Aperture Range: f/2.8 to f/32
• Super UD & Fluorite Elements
• Super Spectra & Air Sphere Coatings

In the Box

• Canon EF 400mm f/2.8L IS III USM Lens
• Canon E-180E Lens Cap
• Canon Lens Dust Cap E (Rear Lens Cap)
• Canon ET-155 (WIII) Lens Hood
• Canon 52mm Drop-in Gelatin Filter Holder (Black)
• Canon LS400 Soft Lens Case
• Limited 1-Year Warranty