The new Tamron SP AF10-24mm F/3.5-4.5 Di II LD Aspherical (IF) is a ultra wide-angle zoom lens for Nikon digital SLRs with built-in motors. The lens covers an extended focal length range equivalent to 16-37mm that is particularly wide for an ultra wide-angle zoom lens, while improving the aperture to F/3.5-4.5 and keeping the filter diameter to 77mm. Note that this lens is designed for exclusive use on digital SLR cameras equipped with smaller sized (APS-C sized) image sensors. The new Tamron 18-270mm lens for Nikon digital SLRs with built-in motors will be available in Japan from September 27th 2008.

Tamron Press Release

NEW TAMRON SP AF10-24mm Di II HIGH-PERFORMANCE ULTRA WIDE-ANGLE ZOOM LENS WITH UNPRECEDENTED FOCAL LENGTH RANGE (MODEL B001)

Designed for Exclusive Use for Canon and Nikon (with Built-in AF Motor) Small Sensor DSLR Cameras

September 1, 2008, Saitama city, Japan- Tamron Co., Ltd (Mr. Morio Ono, President) announced the SP AF10-24mm F/3.5-4.5 Di II LD Aspherical (IF) featuring an unprecedented 2.4X zoom ratio in its class of ultra wide-angle zoom lenses. The innovative, high-performance ultra wide-angle zoom lens (model B001) is designed exclusively for Canon and Nikon digital SLRs with APS-C sized image sensors. Pentax and Sony mount models will be announced at a later date.

Product Name Date of Launch (in Japan)
SP AF10-24mm F/3.5-4.5 Di II (Model B001)
For Nikon with Built-In Motor September 27, 2008

The SP AF10-24mm Di II, the first-ever ultra wide-angle lens for digital SLR cameras, features a focal length range with the 35mm equivalent of 16mm ultra wide-angle to 37mm semi-wide-angle in a user-friendly lightweight, compact design. With this versatile ultra-wide-angle zoom lens, photographers can capture magnificent vistas and extraordinary close-ups, bold compositions and unique perspectives, creating imagery impossible with standard wide-angle lenses.

The advanced optical system of this ultra wide angle lens features large-aperture, glass-molded aspherical elements, hybrid aspherical elements, as well as elements made of special low-dispersion glass and high-refractive index glass, all of which combine to deliver high-quality imagery and performance.

* 1 Di (Digitally integrated design)-II lenses are designed for exclusive use on digital cameras with APS-C sized smaller image sensors. Di II lenses are not designed for use with 35mm film cameras and digital SLRs with image sensors larger than 24mmx16mm.
* 2 Tamron’s conversion value is 1.55x

MAIN FEATURES

1. Compact Ultra Wide-angle Zoom Lens Covering a Broad Range from 10mm to 24mm
The new Tamron zoom covers a focal length range equivalent to 16-37mm* when converted to a 35mm full-size format. Its ultra-wide zoom ratio of more than 2X provides a versatile variety of angles of view, thus improving photographic creativity.

*Tamron’s conversion ratio is 1.5x.

2. Features an Optical Design Optimized for Digital Camera Characteristics Ensures High Optical Performance
(1) Employment of Special Optical Glass Materials Provides High Performance
The new zoom lens uses an HID glass element and a pair of LD glass elements to minimize on-axis and lateral chromatic aberrations that are the greatest hindrance to high optical quality.  To further achieve outstanding optical quality, the lens uses a high quality, glass-molded aspherical element and three hybrid aspherical elements to thoroughly compensate for spherical and comatic aberrations and distortion.
* HID – High Index/High Dispersion optical glass
* LD – Low Dispersion optical glass

(2) Optical Design Optimizes the Angles of Incidences of Light Rays Reaching the Imager
The ultra wide zoom lens uses a new optical system designed to confine the changing angles of incidences of light rays reaching the imager within a certain scope over the entire image field from the center to the periphery, by considering the effects of variances due to zooming.

(3) Enhanced Peripheral Illumination
Peripheral light fall-off is minimized so that images are high quality from the center to the periphery.

(4) Outstanding Resolution
As an SP Di II class lens, it provides high optical quality in terms of resolution, contrast and flatness of image field.

(5) Internal Surface Coating Reduces Ghosting and Flare
The lens uses a newly developed multiple coating and internal surface coating, (i.e., multiple-layer coatings on cemented surfaces of plural lenses) to reduce the image degradation caused by the reflection of light rays entering from the lens front and affected by the imager.

3. Ultra Compact and Lightweight Design
The new zoom lens covers a wider focal length range with a greater zoom ratio and offers a faster maximum aperture and enhanced optical quality than the existing SP AF11-18mm zoom lens. Despite higher specifications that are likely to incur a bulky design, the new zoom lens is lightweight and compact. Tamron has successfully realized a versatile ultra wide-angle zoom lens that is lightweight and compact enough in overall length and diameter to accept a 77mm filter, the same as the existing SP AF11-18mm zoom lens.

4. Minimum Focus Distance of 0.24m throughout the Entire Zoom Range
Considering the importance of “close focusing capability” as an essential condition in wide-angle photography, Tamron has achieved a 0.24m minimum focus distance over the entire zoom range. Getting closer to the subject allows you to easily express a more creative photographic vision.

5. Flower-shaped Lens Hood
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.

6. New External Design Conveying “High Performance, High Precision Image” on the Basis of Tamron’s Conventional Lens Design
The external design is improved to enhance the uniformity and smoothness.  The metallic finish of the gold band of Tamron lenses makes it stand out as a Di II lens, while the layout of alphanumerical markings is improved for better visibility. The rubber patterns of the zoom and focus rings have also been improved to compliment today’s digital camera design style and to provide better handling.

SPECIFICATIONS
Model Name ? AB001
Foal Length ? 10-24mm
Maximum Aperture ? F/3.5-4.5
Angle of View ? 108° 44? - 60° 20? (APS-C size equivalent)
Lens Construction ? 12 elements in 9 groups
Minimum Focusing Distance ? 0.24m (Over the entire zoom range)
Maximum Mag. Ratio ? 1:5.1 (at f=24mm)
Filter Diameter ? Ø77mm
Overall Length?? ? 86.5mm (3.4”)*
Maximum Diameter ? Ø83.2mm (3.3”)*
Weight   ? 370g (13.1oz)*
Diaphragm Blades?????? ? 7 blades
Minimum Aperture ? F/22
Standard Accessory ? Flower-shaped Lens Hood
Compatible Mount ? Canon, Nikon, Pentax, and Sony

*Values give are for Nikon cameras.

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