 AF55-200mm F/4-5.6 Di II LD
Model A015
A telephoto zoom designed exclusively for digital SLR cameras
This lens is ideal for anyone who wants to capture truly dynamic telephoto images far beyond the capabilities of the standard zoom. It's ideal for photos of family fun, sport events, scenery, and portraiture, the lens naturally creates a out-of-focus background that emphasises the main subject of your photo.
SPECIFICATIONS
| Model no. |
A015 |
| Lens construction |
13 elements in 9 groups |
| Angle of view |
28°28'–7°59' (APS-C size equivalent) |
| Type of zooming |
|
| Diaphragm blade number |
9 |
| Minimum aperture |
F/32 |
| Minimum focus |
0.95m (37.4") over entire zoom range |
| Macro mag. ratio |
1:3.5 (at f=200, MFD 0.95m) |
| Filter diameter |
ø52 |
| Weight |
300g (10.4oz) |
| Diameter x length |
ø71.6 x 83.0mm ( ø2.8 x 3.3in.) |
| Supplied accessory |
Lens hood |
| Mounts available |
Canon AF,
Sony (Konica Minolta),
Nikon AF-D |
NOMENCLATURE
Digitally Integrated Design for DSLRs with small sensors
Di II lenses are designed for exclusive use on digital SLR cameras with APS-C-format image sensors. All Di II lenses are optimised to meet the performance characteristics of DSLRs, providing maximal resolution concentrated within the image field and assuring that light rays at the edges of the frame reach the sensor at favourable angles, thereby minimising peripheral light falloff.
In addition, all Di II lenses incorporate effective measures to increase light transmission and eliminate ghosting and flare, which are particularly noticeable with digital cameras. Tamron’s advanced multi-coatings are applied not only to external and internal lens surfaces, but also to surfaces in between cemented lens elements. Finally, Di II lenses are offered in a wide array that includes the focal length ranges most desired by DSLR shooters.  Low Dispersion
Chromatic aberration occurs when a lens element refracts different wavelengths of a ray of light – its rainbow colours – at very slightly different angles. This results in the 'colour fringing' that reduces the sharpness of an image. LD elements are made from special glass materials with extremely low dispersion indices (i.e. the refraction of a ray of light into rainbow colours is extremely narrow). Thus they effectively compensate for chromatic aberration at the centre of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (toward the edges of the field) that often occurs at short (wideangle) focal lengths. Although costly, LD glass materials result in clear, vivid image quality.
Specifications, design, product name and standard accessories may differ
by country or area. While every effort has been made to ensure accuracy,
these matters are subject to change by the manufacturer without notice
or obligation.
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