| Name |
Canon EF 400mm f/4 DO IS USM |
| Image Circle |
35mm |
| Type |
Telephoto Prime |
| Focal Length |
400mm |
| APS Equivalent |
640mm |
| Max Aperture |
f/4 |
| Min Aperture |
f32 |
| Diaphragm Blades |
8 |
| Lens Construction |
17 elements in 13 groups, including 1 flourite and 1 DO element |
| Diagonal Angle of View(Based on image circle) |
6.2 degrees |
| Focus Details |
Inner focusing; full-time manual focus and USM |
| Front Element Rotation |
No |
| Zoom System |
n/a |
| Closest Focus |
3.5m / 11.5 ft. |
| Magnification Ratio |
0.12x / 1:8.3 |
| Filter Size |
52mm Drop In |
| Dimensions(Length x Diameter) |
233mm x 128mm / 9.2 in. x 5 in. |
| Weight |
1.94kg / 4.3 lb |
| Notes |
Image Stabilization |
| Typical Online Price |
US$5300 |
