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. Not stabilizedImage 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. |
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The brilliant long-distance lens with wide aperture and fast auto-focus response. For definitive long-shot precision and spectacular portraits even in low light, this professional G-Series lens raises the standard of DLSR performance. Its 35mm-equivalent 450mm focal length and ultra-bright f2.8 aperture combine for superb results in virtually any light -- and its high-speed SSM (Super Sonic wave Motor) auto-focus is fast, accurate and quiet.
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Available mount(s) | Sony / Minolta A |
Application(s) | Sports, Wildlife |
Category(s) | Super telephoto |
Multiplier | 1× |
Stabilizer | no |
Focal length | 300 mm (prime) |
Lens construction | 13 elements in 12 groups |
Angle of view |
35mm: 8.1° digital: 5.3° |
Number of blades | 9 |
Maximum aperture | f/2.8 |
Minimum aperture | f/32 |
Minimum focusing distance | 200 cm |
Magnification | 0.18× |
Filter size | 42 mm |
Size | ∅ 122 × 242.5 mm |
Weight | 2310 g |
Notes |
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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 | N/A |
Ultrasonic AF | yes |
Stepping motor AF | no |
APS-C sized circle | no |
Low dispersion lens element | yes |
Hard case | N/A |
Soft case | included |
Lens hood | included |
Tripod adapter | N/A |