A lens surface with more than one radius of curvature
(i.e., the surface does not form part of a sphere). The aspherical elements of a
lens help compensate for many lens aberrations common in simpler lens designs.
Aspherical elements are particularly important for wide-angle lenses, since they
are prone to distortion.
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369.00Maintaining the high performance of the previous model, Tamron's new 28-300mm zoom lens now features our Di design, making it the ideal lens for use w...
Beach Camera.com
369.00Features Di: Digitally Integrated Design, is a designation Tamron puts on lenses featuring optical systems designed to meet the performance character...
eBay
369.00The new 28-300mm XR Model A06 zoom achieves a remarkable 25% reduction in size, and 28% reduction in weight compared with the previous 28-300mm model ...
Beach Camera.com
369.00Features Di: Digitally Integrated Design, is a designation Tamron puts on lenses featuring optical systems designed to meet the performance character...
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