 AF75-300mm F/4-5.6 LD Macro
Model 672D
Tamron offers a lightweight, compact, high-image-quality telephoto zoom lens with macro capability of 1:2 that can be used with digital cameras. This Di-type lens uses an optical system with improved multi-coating optimised for both digital and film SLRs.
Flipping a macro switch in the focal length range of 180mm–300mm obtains a maximum magnification ratio of 1:2 at a minimum focus distance as short as 37.4", enabling close-up shots of flowers, insects, and other objects that normally require the use of a specially designed macro lens. Moreover, this zoom model casually offers the distant capture and foreshortening effect pleasures of the 300mm ultra-telephoto world.
SPECIFICATIONS
| Model no. |
672D |
| Lens construction |
13 elements in 9 groups |
| Angle of view |
34°21'-8°15' |
| Type of zooming |
Rotation |
| Diaphragm blade number |
9 |
| Minimum aperture |
F/32 |
| Minimum focus distance |
59in.(1.5m) in normal settings/ 37.4" (0.95m) in macro mode (f=180mm-300mm range) |
| Macro magnification ratio |
1:2 (at f=300mm MFD 0.95m) |
| Filter diameter |
ø62 |
| Weight |
435g (15.3oz) |
| Diameter x length |
ø76.6 x 116.5mm
(ø3.0 x 4.6in.) |
| Supplied accessory |
Lens hood |
| Mounts available |
Canon
Sony (Konica Minolta)
Nikon-D
Pentax |
NOMENCLATURE
 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.
© Copyright 2001–2010 Tamron Co Ltd
|
