The Canon EF 300mm f/4L IS USM Autofocus Lens is controlled by a 16-bit microcomputer that minimizes blurred images due to camera shake. A special mode intelligently compensates just for up & down movement, providing sharp, stable images for panning. The optical design that compensates for all types of aberrations from infinity to the closest shooting distance of 4.9'. Two ultra-low dispersion (UD) glass elements ensure clear images and accurate color. Image Stabilization technology gives you the equivalent effect of up to 2 full shutter speeds slower handholdability than a conventional lens. And Canon's advanced ultrasonic focusing motor (USM) and rear focusing design provide silent, high speed autofocusing with fulltime manual focus override.
| Performance | |
|---|---|
| Focal Length | 300 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 | 8° |
| Minimum Focus Distance | 4.92' (1.50 m) |
| Magnification | 0.24x |
| Maximum Reproduction Ratio | 1:4.1 |
| Groups/Elements | 11/15 |
| Diaphragm Blades | 8 |
| Features | |
|---|---|
| Image Stabilization | Yes |
| Autofocus | Yes |
| Tripod Collar | Yes |
| Physical | |
|---|---|
| Filter Thread | 77 mm |
| Dimensions (DxL) | Approx. 3.5 x 8.7" (8.89 x 22.10 cm) |
| Weight | 2.62 lb (1.19 kg) |