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Tamron 28-75mm f/2.8 gains motor for Nikons

By dpreview staff on May 15, 2008 at 08:11 GMT
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Tamron has continued its process of adding in-lens motors to its Nikon-mount lenses, with its 28-75mm f/2.8 being the latest recipient. This makes the lens fully compatible with the Nikon D40, D40x and D60, offering their owners fields of view equivalent to a 42-112.5mm lens (in FX/35mm terms). The magnificently named 'SP AF28-75mm F/2.8 XR Di LD Aspherical (IF) MACRO' can focus as close as 33cm throughout its zoom range.

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Press Release:

TAMRON ANNOUNCES THE LAUNCH OF SP AF28-75mm F/2.8 XR Di LD Aspherical (IF) MACRO with Built-in AF Motor for Nikon (Model A09NII)

May 15, 2008, Commack, NYTamron Co., Ltd announced the launch of the popular SP AF28-75mm F/2.8 XR Di LD Aspherical (IF) MACRO, a lightweight, compact and fast standard zoom lens compatible with full-size SLR cameras, now equipped with a built-in AF motor for use with Nikon cameras (model A09NII).

The award-winning SP AF28-75mm F/2.8 XR Di LD Aspherical (IF) MACRO zoom lens is a lightweight and compact standard zoom lens compatible with full-size SLR cameras and features a fast maximum aperture of F/2.8 that is constant over the entire zoom range. The lens enables users to enjoy the creative world of SLR photography by exploiting the attractive out-of-focus effect particular to fast maximum aperture lenses seen in portraiture or when using high shutter speeds.

MAIN FEATURES

Lightweight, fast standard zoom lens featuring Tamron’s proprietary XR technology
The optical system designed to optimize the power distribution within the system by the innovative employment of XR (high refractive index) glass elements has realized the compactness while effectively compensating for various aberrations. Four hybrid aspherical elements placed at ideal positions ensure high depictive performance while contributing to downsizing the overall length. In addition, three LD (low dispersion) glass elements deliver high quality images.

Minimum focus distance of 0.33m over the entire zoom range for 1:3.9 maximum magnification
The SP AF28-75mm F/2.8 XR Di sports the minimum focus distance of 0.33m over the entire zoom range, the closest distance among fast standard zoom lenses in the class. With Tamron’s conventional SP AF28-105mm F/2.8 zoom lens, the minimum focus distance changes (0.5m at 28mm/105mm but 0.44m in the 70-85mm range). However, the SP AF28-75mm F/2.8 XR Di retains the minimum focus distance of 0.33m over the entire zoom range thanks to improvements in its optical and mechanical designs. The maximum magnification ratio of 1:3.9 at the 75mm tele end enables you to enjoy close-up photography easily.

Mechanical design improvements for downsizing the maximum diameter while minimizing changes in zooming torque
By the employment of various improvements in its mechanical design, Tamron has successfully packed the complicated lens configuration into a compact body for downsizing the maximum diameter of the lens. In addition, the improved mechanical construction minimizes changes in zooming torque for enhancing operational ease. Hidden improvements are also made from the perspective of manufacturing engineering to enhance the accuracy of parts, realizing the light weight and increasing durability.

Zoom lock mechanism for convenience in carrying the outfit
The lens has a built-in zoom lock mechanism to prevent sliding fall of its barrel when the outfit is carried around.

Flower-shaped lens hood as a standard accessory
The lens is supplied with a flower-shaped lens hood as a standard accessory designed to efficiently cut harmful light entering from angles other than intended angles at four corners of the frame in order to ensure clear descriptive performance.

Form and texture appealing “high performance and the feel of high accuracy” worthy for the name “SP” – Outer design matching the new generation lens
1. Two gold-colored metal rings are placed at a key portion of the lens in order to enhance the visibility of the symbol of Tamron’s “SP” series.
2. The rubber pattern of the zoom and focus control rings has been changed to a pattern that is denser than the conventional rubber pattern, for better feel and touch in manipulating the lens.
3. Typefaces on the lens have been changed for better visibility.
4. Delicate matt-finish painting is added to the black painting over the lens barrel in order to enhance high quality image.

Tamron lens specifications

Lens name SP AF28-75mm F/2.8 XR Di LD Aspherical (IF) MACRO
Focal length 28 - 75 mm
Angle of view 75�- 32�
Maximum aperture f/2.8
Minimum aperture f/32
Lens construction 14 groups 16 elements
Closest focus distance 33 cm
Maximum magnification ratio 1:3.9
Aperture blades 7
Filter attachment size 67 mm
Dimensions 92 mm × 73 mm (3.62in × 2.87in)
Weight 510g (18oz)
Included accessories Flower-shaped lens hood
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