The 400mm f/4.0 DO IS USM is Canon's breakthrough in multi-layer diffractive optical lens technology. This sheds new ground for sports, nature and wildlife photographers, giving exemplary results in a size previously unheard of for a lens of such a focal length and aperture. Simply put, the size and ease of handling must be seen to be understood.
| Performance | |
|---|---|
| Focal Length | 400 mm |
| Aperture |
Maximum: f/4 Minimum: f/32 |
| Camera Mount Type | Canon EF |
| Format Compatibility |
35mm Film / Full-Frame Digital Sensor Canon (APS-C) |
| Angle of View | 6° |
| Minimum Focus Distance | 11.48' (3.5 m) |
| Magnification | 0.12x |
| Maximum Reproduction Ratio | 1:8.3 |
| Groups/Elements | 13/17 |
| Diaphragm Blades | 8 |
| Features | |
|---|---|
| Image Stabilization | Yes |
| Autofocus | Yes |
| Tripod Collar | Yes |
| Physical | |
|---|---|
| Filter Thread | 52 mm |
| Dimensions (DxL) | Approx. 5.0 x 9.1" (12.70 x 23.11 cm) |
| Weight | 4.27 lb (1.94 kg) |