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Sigma 120-300mm F2.8 EX DG IF HSM APO Zoom Lens -- A Nice Interchangeable Lens

Sigma Corporation is a Japanese company well known for cameras, flashes, lenses and other photographic accessories. Sigma produces products that work with Canon, Pentax, Nikon, Sony, Konica, Olympus, Panasonic and their own. Sigma launched their new popular telephoto zoom lens called Sigma 120-300mm F2.8 DG HSM SLR (Single Lens Reflex).

The lens gets built with a combination of 18 elements in 16 groups. The dimension of this lens is 112.8 mm (4.4 inches) x 271 mm (10.6 inches) (Diameter x Length). The focal length of the lens is 120 to 300 mm. The angle of view offered by this lens is 20.4 degree to 8.2 degree. It includes nine diaphragm blades within it. The minimum focusing distance range will be 150 cm (59 inches) to 250 cm (98 inches). The maximum magnification ratio offered by this lens is 1:8.6. The filter size will be 105 mm.

The front element of the lens does not rotate and so the circular polarizing filter can be attached and used with ease. The minimum aperture of the lens is F32. It contains a bayonet lens hood for the mounting of lens. This lens contains two SLD (Special Low Dispersion) glass elements, one at the front group and the other at the rear group for correcting the chromatic aberration. The lens is nicely coated and so it reduces flare and ghosts while using with digital cameras.

The AF drive is equipped with a silent, high speed HSM (Hyper Sonic Motor) which provides a brilliant full-time manual focus function. When this lens is used with APO EX teleconverters then the high speed focusing of 1.4x and 2x is possible. When APO teleconverter is added, we can use this lens as a 168 to 420 mm F4 tele-zoom lens with 2x teleconverter. It can be used as a 240 to 600 mm F5.6 AF ultra telephoto zoom lens on a 2x teleconverter. The automatic exposure function can be used with the teleconverters.

Sigma 120-300mm F2.8 DG HSM offers an optimum natural color balance. It offers excellent imaging under any condition like that of prime lens. It provides sharper images with good color. It includes an excellent internal mechanism. It offers great image quality. Sigma 120-300mm F2.8 comes with a removable tripod mount. The lens weighs 2600 grams (91.71 ounces). This lens has a very nice build quality. This lens is very comfortable to handle and easy to use. Sigma 120-300mm F2.8 DG HSM SLR is best suitable for sports photography and wild life photography.

dbal
Sun, 21 Feb 2010 12:32:45 +0000

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