Tamron's Di lenses featuring optical systems for use with both digital and film cameras have been highly evaluated by many users the world over since the introduction of the first Di lens, SP AF28-75mm F/2.8 (Model A09), in 2003. All Di-series lenses introduced by Tamron so far are SP lenses featuring superior specifications. However, many users strongly suggested that Tamron make the existing non-SP high power and compact lenses available in the Di design in order to realize the same convenience and quality images with digital cameras. Tamron has redesigned the conventional AF28-300mm zoom (A06) to feature the Di design in order to meet the demand of those photographers.
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