Tamron Introduces SP AF17-50mm F/2.8 XR Di II LD Aspherical IF Lens for PentaxTamron has introduced its SP AF17-50mm F/2.8 XR Di-II LD Aspherical [IF] (Model A16) in Pentax mount designed exclusively for digital SLR cameras with smaller size image sensors. The wide-angle focal length is established at 17mm (26mm equivalent) to obtain a wider angle of view than ordinary standard zoom lenses, while maintaining the remarkably lightweight and compact size of the earlier full frame zoom lens model. Since the lens is designed exclusively for APS-C sized digital cameras, the image circle diameter has been reduced.
Read MoreSource: CameraTown.com (2008-02-03 17:00:13)