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January 28, 2008
Tamron Co., Ltd.
Tamron SP AF17-50mm F/2.8 XR DI II LD ASPHERICAL is
Now Available in Pentax Mount Lightweight, Compact, Fast 2.8 Standard Zoom Lens,
Designed for Exclusive Use with Digital SLR Cameras (APS-C Size)

Mr. Morio Ono, President of Tamron Co., Ltd., announced that Tamron 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.*
SP AF17-50mm F/2.8 XR Di II (Model A16)
Product Name Date of Launch (in Japan)

AF17-50mm F/2.8 XR Di II
(Model A16)

for Pentax
March 7th, 2008

SP AF17-50mm F/2.8 XR Di II is fast standard zoom lens, covering easy-to-use focal length range equivalent to 26-78mm** when converted to the 35mm format. With a fast F/2.8, it delivers faster shutter speeds and a natural soft-focus effect that makes your photography even more sophisticated.

* Di (Digitally integrated)-II lenses are designed for exclusive use on digital cameras with smaller-size imagers. This lens is not designed for use with 35mm film cameras or digital SLR cameras with image sensors larger than 24mm x 16mm.

(**) Tamron's conversion value is 1.55x.
Model Name A16 for Pentax
Focal Length 17-50mm
Maximum Aperture F/2.8
Angle of View 78°45'-31°11' (APS-C size equivalent)
Lens Construction 16 elements in 13 groups
Minimum Focus Distance 0.27m (Over the entire zoom range)
Maximum Mag. Ratio 1:4.5 (at f=50mm MFD 0.27m)
Filter Diameter φ67mm
Overall Length 84.2mm *
Maximum Diameter φ73.8mm
Weight 440g *
Diaphragm Blades 7 blades (Circular apertures)
Minimum Aperture F/32
Standard Accessory Flower-shaped Lens Hood
*The cosmetic design and specs are subject to change without notice.
SP AF70-200mm F/2.8 Di (Model A001) for Canon

SP AF17-50mm F/2.8 XR Di II (Model A16N II) for Nikon with Built-In Motor

AF18-200mm F/3.5-6.3 XR Di II (Model A14N II)for Nikon with Built-In Motor

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