Canon Macro Lenses | BY A PHOTOGRAPHER FOR PHOTOGRAPHERS |
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Tamron
Autofocus 18-200mm f/3.5-6.3 XR Di II Macro Lens for Canon Digital SLR Cameras The Tamron AF18-200mm
high power zoom lens features an entirely new optical design using XR
(Extra Refractive Index) glass in an innovative way in order to optimize
the overall distribution of optical power throughout the entire zoom range.
This design reduces various aberrations to the absolute minimum and achieves
remarkable downsizing at the same time. In addition, three hybrid aspherical
lens elements and two LD (Low Dispersion) glass elements are used to accomplish
effective compensation of on-axis and lateral chromatic aberrations, a
critical factor to enhance the optical quality in digital photography.
As a result, the lens provides outstanding optical quality in a multi-purpose
zoom lens. A glare-reducing flower-shaped lens hood is included as a standard
accessory. The special hood provides optimum shading of superfluous light
rays that enter from the rectangular frame outside the image field. |
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