Lens finder
Canon EF 300mm f/2.8L 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. Weather SealedWeather sealed lenses are protected from dust and water. While they are not water proof, these lenses can be used in rain and other humid environments. Some sealings only provide protection against dust or water, not both. Sealing is only available when the lens is used on a similarly weather sealed camera body. Supports drop-in filtersDrop-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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Successor of the EF300mm f/2.8L USM, this is a next-generation wide aperture 300mm lens with a newly designed optical system to achieve even better image quality. And the image stabilizer that equals about 2 shutter speed steps maximizes the performance of the lens under all photgraphy conditions. Its autofocusing is the fastest in the world (when used with an EOS-3). Closest focusing distance has been reduced to 2.5m, while operatibility has been substantially improved by full time mechanical manual focus, improved focus preset, and the introduction of an AF Stop function. The lens's super light design includes a magnesium alloy lens barrel and it offers good dust-proof and moisture-proof performance even under harsh conditions. It comes with a removable tripod.
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Canon EF 300mm f/2.8L IS USM Specification
| Available mount(s) | Canon EF |
| Application(s) | Sports, Wildlife |
| Category(s) | Super telephoto |
| Multiplier | 1× |
| Stabilizer | yes |
| Focal length | 300 mm (prime) |
| Lens construction | 17 elements in 13 groups |
| Angle of view |
35mm: 8.25° digital: N/A |
| Number of blades | 8 |
| Maximum aperture | f/2.8 |
| Minimum aperture | f/32 |
| Minimum focusing distance | 250 cm |
| Magnification | 0.13× |
| Filter size | 52 mm |
| Size | ∅ 128 × 252 mm |
| Weight | 2550 g |
| Notes |
Mechanical full-time manual focusing built-in. Filter: drop-in |
| AF speed | N/A |
| AF sound | |
| Internal focusing | yes |
| Internal zoom | N/A |
| Fix front lens | yes |
| Mount type | metal |
| Weather sealed | yes |
| Drop in filter | yes |
| Ultrasonic AF | yes |
| Stepping motor AF | no |
| APS-C sized circle | no |
| Low dispersion lens element | yes |
| Hard case | Lens Case 300 |
| Soft case | N/A |
| Lens hood |
ET-120 printable lens hood |
| Tripod adapter | N/A |
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