


- EF mount; super telephoto lens
- Fluorite and Ultra-low Dispersion-glass; internal focusing; full-time manual focus
- 400mm focal length
- f/5.6 maximum aperture
- Micro UltraSonic Motor (USM)
Overview
Light. Portable. Excellent handling. Sharp. And amazingly fast autofocus. The 400mm f/5.6L is all of these things, and a premier choice for wildlife and nature photographers--one of the finest telephoto lenses in the world for fast-moving subjects such as birds in flight or motor sports. It uses UD-glass elements to provide outstanding optical quality, even wide-open, and image quality is preserved when used with either the EF 1.4x II or EF 2x II tele extenders. It accepts 77mm filters, and has a built-in removable tripod collar.

| Lens Min. Focus Distance | 11.5' |
| Lens Filter Size | 77mm |
| Lens Magnification Factor | 1.8x |
| Elements / Groups | 7 elements in 6 groups |
| Lens f Stop Range | 5.6-32 |
| Lens Type | Telephoto |
| Angle of View (diagonal) | 6 10' |
| Maximum Aperture | f/5.6 maximum aperture |
| Focus Type | Auto / Manual |
| Mount Type | Canon |
| Length | 10.1"" |
| Maximum Diameter | 3.5"" |
| Color | White |
| Brand | Canon |