Tamron announced today the SP AF17-50mm F/2.8 XR Di-II LD Aspherical [IF] lens, a lightweight and compact fast standard zoom lens designed exclusively for digital SLR cameras with smaller size image sensors.
The new lens comes two years after the SP AF28-75mm F/2.8 XR, a popular product with advanced amateur and professional photographers alike.
Now Tamron has unveiled a new design for fast standard zoom lenses used exclusively for digital SLR cameras that covers the easy to use angles of view: the focal length is equivalent to 26-78mm
when converted to a 35mm format.
In addition, portrait shots are made beautiful with the natural out-of-focus effect characteristic provided by the fast F/2.8 aperture.
The minimum focus distance of 0.27m over the entire zoom range achieves a maximum magnification ratio of 1:4.5 at 50mm.
By employing "Internal Surface Coatings" and new multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and reflections caused by the imagers themselves are reduced to the absolute minimum.
The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination.
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.
The SP AF17-50mm F/2.8 XR Di-II LD Aspherical [IF] will be available starting May 2006.
Specifications Focal Length: 17-50mm
Maximum Aperture: F/2.8
Angle of View: 7845' - 3111' (APS-C size equivalent)
Lens Construction: 16 elements / 13 groups
MFD: 10.6" (0.27m) (entire zoom range)
Max. Mag Ratio: 1:4.5 (at f=50mm, MFD 0.27m)
Diaphragm Blades: 7 (Circular Apertures)
Filter Size: 67mm
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