- Focal length and maximum aperture: 400 mm f5.6
- Lens construction: 7 elements in 6 groups
- Diagonal angle of view: 6°-10°
- Focus adjustment: Inner focusing system with USM
- Closest focusing distance: 3.5m / 11.5ft
- Filter size: 77mm
Canon EF 400mm f/5.6 L USM Lens