Sigma 28-105mm f/2.8-4.0 Aspherical Lens for Pentax SLR Cameras
by SIGMA

List Price: $269.99
Category: Digital Camera
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Digital Photo Product Details

• Dedicated to Pentax AF SLR cameras
• Extremely compact, weighing less than 10 ounces
• Lens construction has 13 elements in 12 groups
• Focusing range of 19.7 inches to infinity, at all zoom settings
• Internal focusing system and a nonrotating front barrel for convenient filter use

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Description of Sigma 28-105mm f/2.8-4.0 Aspherical Lens for Pentax SLR Cameras

Though containing some of its predecessors' strengths, such as a 19.7-inch close-focus range, this model gives you the slightly larger maximum aperture of f3.8-f5.6 and a lighter weight. The use of aspherical optics and a new mechanical construction in the design can be credited with the reduction in weight. Despite its compact size, just under three inches, this lens maintains the high level of performance for which its predecessors are known. The internal focusing system allows for a nonrotating front barrel, making for the convenient use of filters. This model is dedicated to Pentax AF SLR cameras.

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