This EF300mm f/4L IS USM is characterized by outstanding mobility thanks to the outstanding image stabilizing system. The optics include 2 UD glass elements to thoroughly eliminate secondary spectrum.
Fixed focal length IS lens popularly used in wildlife and sports photography Compact L-series telephoto lens with an Image Stabilizer which compensates for camera shake with equivalent effect of a shutter speed two stops faster. Two Image Stabilizer modes are provided: Stabilizer Mode 1 (the same mode featured on the EF 75-300mm f/4-5.6 IS USM) and the new Stabilizer Mode 2 which steadies the image during horizontal or vertical panning.The image stabilizer also functions when using the Extender EF1.4xII or Extender EF2xII to provide that elusive 600mm shooting capability
Specification
| Angle of view (horzntl, vertl, diagnl) | 6°50`, 4°35`, 8°15` |
| Lens construction (elements/groups) | 15/11 |
| No. of diaphragm blades | 8 |
| Minimum aperture | 32 |
| Closest focusing distance (m) | 1.5 |
| Maximum magnification (x) | 0.24 |
| AF actuator | USM |
| Filter diameter (mm) | 77 |
| Max. diameter x length (mm) | 90 x 221 |
| Weight (g) | 1,190 |
| Magnification with Extension Tube EF12 | 0.30 - 0.04 |
| Magnification with Extension Tube EF25 | 0.37 - 0.09 |
| Lens hood | - |
| Hard case | LH-D27 |
| Soft case | LZ1128 |
| G.F.Holder III (hood III) | (5) |
| G.F.Holder IV (hood IV) | (5) |
| AF actuator | Mechanical full-time manual focusing built-in. |
| Maximum number of Hood III/IV attachable. In case of zoom lenses, the maximum number applies to the short focal lenght | |
