Lens finder
Canon EF 300mm f/4.0L IS USM
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Full frame sized imageLenses that create APS-C sized image are designed for digital only. They cannot be used on cameras that have image sensor larger than the APS-C format. These lenses are not suitable for film cameras either. Ultrasonic AFLenses with ultrasonic focusing mechanism tend to be quiter and faster than traditionally focusing lenses. No stepping motor AFLenses with stepping motor focusing mechanism are better for contrast based focusing, and are quiter and faster than traditionally focusing lenses. One or more Low Dispersion lens element is usedLow Dispersion lens elements help to reduce chromatic aberration. Built-in image stabilizerImage stabilization helps to reduce blur caused by hand shake, especially at high focal length or in low light situations. Image stabilization can give 1 to 3 stop advantage over none stabilized lens, based on the reciprocal rule. Metal mountCheaper lenses are usually equipped with plastic mount, while more expensive, professional lenses have metal mount. In general, metal mounts are more durable, and a good thing to have when lenses are changed a lot. When a camera is used mainly with one lens, the material of the lens mount is not that important. Internal FocusingInternally focusing lenses don't change their size while setting focus. The front lens is fixedThe fixed front lens is not rotating during zoom and/or focusing. This allows the photographer to use petal shaped lens hood. Fixed front lenses also make the use of polarization filters a lot easier. No drop-in filter supportDrop-in filters are used in those lenses where either the front lens is too large, or the field of view doesn't permit the use of traditional filters at the front of the lens. Usually bright tele and ultra-wide angle lenses support this filter type. |
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Compact L-series telephoto lens with an Image Stabilizer which compensates for camera shake with the 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. Mode 2 detects the panning direction automatically. The closest focusing distance is 4.9 feet (1.5 m).
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Canon EF 300mm f/4.0L IS USM Specification
| Available mount(s) | Canon EF |
| Application(s) | Sports, Wildlife |
| Category(s) | Super telephoto |
| Multiplier | 1× |
| Stabilizer | yes (2 f-stop advantage, supports panning ) |
| Focal length | 300 mm (prime) |
| Lens construction | 15 elements in 11 groups |
| Angle of view |
35mm: 8.25° digital: N/A |
| Number of blades | 8 |
| Maximum aperture | f/4 |
| Minimum aperture | f/32 |
| Minimum focusing distance | 150 cm |
| Magnification | 0.24× |
| Filter size | 77 mm |
| Size | ∅ 90 × 221 mm |
| Weight | 1190 g |
| Notes |
AF Actuator: Ring USM
Built-in lens hood |
| AF speed | N/A |
| AF sound | |
| Internal focusing | yes |
| Internal zoom | N/A |
| Fix front lens | yes |
| Mount type | metal |
| Weather sealed | N/A |
| Drop in filter | no |
| Ultrasonic AF | yes |
| Stepping motor AF | no |
| APS-C sized circle | no |
| Low dispersion lens element | yes |
| Hard case | LH-D27 |
| Soft case | LZ1128 |
| Lens hood | N/A |
| Tripod adapter | N/A |
Canon EF 300mm f/4.0L IS USM Reviews
Other reviews
- Canon EF 300mm f/4.0L IS USM review at www.ephotozine.com (English)
- Canon EF 300mm f/4.0L IS USM review at dc.watch.impress.co.jp (Japanese)
- Canon EF 300mm f/4.0L IS USM review at dc.watch.impress.co.jp (Japanese)
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