IF (Inner Focus)
To ensure stability in focusing, this lens moves the inner lens group or groups without changing the lens' physical length.

ASP (Aspherical Lens)
The aspherical lens complex allows freedom of design, improved performance, a reduced number of component lenses and a compact size.

DG (DG for DIGITAL & FILM)
These are large-aperture lenses with wide angles and short minimum focusing distances. With an abundance of peripheral illumination, they are ideal lenses for Digital SLR Cameras whilst retaining suitability for traditional 35mm SLRs.

28-200mm f/3.5-5.6 DG MACRO

A high performance zoom lens ideal for travel and action photography and optimised for both film and digital SLR cameras.

This lens covers all the focal lengths from 28mm wide angle to 200mm telephoto, the most frequently used focal length range.With a maximum diameter of 70mm (2.75 in.) and length of 75.2mm (2.96 in.), it has a compact size. And with a triple-cam internal-focus system, it packs a lot of performance in a compact package. Portable and mobile, the lens can be carried anywhere, so it is ideal for travel and snapshot photography.

With 2 aspherical Lens, it has excellent correction for all types of aberration, and it displays a high level of optical ability throughout the entire zoom range. The inner focus system allows the lens to be focused without having to rotate the front of the lens, and the lens accepts a Petal-type hood and it is also easy to use a circular polarizing filter.

Sigma's lens technology has produced a lens that combines compact size and high performance
Ideal for travel and snapshot photography, this lens uses Sigma's own triple-cam internal focus system and achieves high performance in a compact package. This high magnification zoom lens covers focal lengths from 28mm wide angle to 200mm telephoto, with closeup capability. With 2 aspherical lenses, it has excellent correction for all types of aberration. It incorporates special internal focusing to enable it to focus as close as 48cm (18.9 inches) from film plane to subject, at all focal lengths, and to the use of polarizing filters. A detachable "perfect hood" is provided. The optical materials used in this new lens are lead and arsenic free ecological glass.

The aspherical lens delivers high image quality throughout the zoom range
The aspherical lens contributes more than compact size: it also delivers improved image quality. The front lens group has excellent correction for distortion at the wide-angle setting, and the rear lens group effectively corrects for spherical aberration, coma aberration, and astigmatic aberration throughout the entire zoom range. This adds up to a lens with outstanding optical ability.

The inner focus system allows the lens to accept a Petal-type hood
Because of the inner focus system, the front barrel does not have to rotate to focus the lens, and a circular polarizing filter can be easily used. In addition, a Petal-type hood can be mounted on the lens to give optimum protection from flare.

Equipped with the most advanced functions, like the 1:3.8 macro photography function
* At the 200mm telephoto setting, the lens is capable of macro photography with a 1:3.8 maximum magnification. The minimum focusing distance is 48cm at all zoom settings. And with a photography magnification scale displayed on the lens barrel, the lens is user friendly.
* A zoom lock switch mechanism is provided to prevent the lens from creeping due to its own weight, and to avoid the danger of the lens receiving a shock while it is being carried.

Price: £169

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Lens Construction
16 Elements in 14 Groups

Angle of View
75.4 - 12.3 degrees

Number of Diaphragm Blades
8 Blades

Minimum Aperture
F22

Minimum Focusing Distance
48cm

Maximum Magnification
1:3.8

Filter Size
62mm

Dimensions
Diameter 70mm X Length 77.7mm

Weight
400g