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Sigma macro lens 28-200mm
Jasper Huitink : October 16th 2005 - 19:00 CET
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SigmaSigma Macro Lens 28-200mm F3.5-5.6 DG : This Sigma Macro Lens 28-200mm F3.5-5.6 DG 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 77.7mm (3 in.), it has a compact size.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 other types of photography. This digitally optimized ultra telephoto lens is equipped with a new multi-layer coating technology that reduces both flare and ghosting. This also ensures an accurate color balance and high definition results.
Sigma macro lens 28-200mmSigma Asperical lens - Image quality
The aspherical lens also delivers improved image quality. The use of aspherical lens elements in both of the front and rear lens groups effectively compensates for various aberration throughout the entire zoom range. This design allows for stability and compactness in design as changes in focus are made in an internal lens grouping. This also gives the advantage of a non-rotating front lens assembly, which is of great benefit when using polarizing filter and Petal-type hood.

Sigma telephoto lens - Macro photography
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.

Macro Sigma lens 28-200mm F3.5-5.6 DG - Zoom lock switch
A zoom lock switch mechanism is provided to prevent the lens from reeping due to its own weight, and to avoid the danger of the lens receiving a shock while it is being carried.

Sigma Macro Lens 28-200mm F3.5-5.6 DG - Specifications
• 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 Diameter 62mm
• Dimensions Diameter 70mm X Length 77.7mm
• Weight 400g
• AF Mounts Pentax SFX and SF7 cannot be used.
• Sigma, Canon, Nikon, Minolta, Pentax





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