SP AF10-24mm F/3.5-4.5 Di II LD Aspherical (IF)
Model B001

A high-performance ultra wide-angle zoom with unprecedented focal length range for use on digital SLR cameras

The SP AF10-24mm F/3.5-4.5 Di II LD Aspherical (IF) features an unprecedented 2.4x zoom ratio in the ultra wide-angle zoom lens class. The user-friendly, lightweight, compact design of the SP AF10-24mm Di II offers APS-C digital SLR camera users a versatile 35mm equivalent focal length range of 16mm ultra wide-angle to 37mm semi wide-angle. Photographers can capture magnificent vistas and extraordinary close-ups, bold compositions and unique perspectives, creating images impossible with standard wide-angle lenses that come fitted with most SLR kits today.

The lens delivers outstandingly sharp, colourful photographs with special optical glass materials such as large-aperture glass-moulded aspherical elements and hybrid aspherical elements.

MAIN FEATURES

1. Covers the broadest range ever—from 10mm ultra wide-angle to 24mm—in its class*.

The new Tamron ultra wide-angle zoom lens covers the 35mm full-size format equivalent of 16-37mm, for the first time in this class of zoom lenses. This focal length range – 10mm ultra wide-angle to 24mm semi wide-angle – enables the user to enjoy hassle-free wide-angle photography.

2. Features an optical design optimised for digital camera characteristics

• Special optical glass for high optical performance
  The new zoom lens uses a high-precision, large-aperture glass-moulded aspherical lens element and three hybrid aspherical elements to minimise spherical aberration, coma, and distortion. In addition, a pair of LD (Low Dispersion) glass elements and an HID (High Index high Dispersion) glass element together compensate for on-axis and lateral chromatic aberrations, delivering high optical quality.
• Optical system designed to optimise angles of incidence of light rays reaching the imager
  The new ultra wide-angle 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 centre to the periphery, addressing the effects of variances caused by zooming.
• Enhanced peripheral illumination
  Peripheral light fall-off that becomes an image-degrading factor in wide-angle photography is minimised to ensure high optical quality from the centre to the periphery.
• Outstanding resolution
  As an SP Di II class lens, it provides high optical quality in resolution, contrast, and flatness of image field.
• Internal surface coatings reduce ghosting and flare
  The lens uses newly developed multiple-layer coatings and internal surface coatings (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, lightweight design

The new zoom lens covers a wider focal length range with a greater zoom ratio and offers a faster maximum aperture than the SP AF11-18mm F/4.5-5.6 Di II zoom lens (Model A13) and enhanced optical quality. Despite the higher specifications, the new zoom lens is lightweight and compact and accepts the same 77mm filter as the SP AF11-18mm Di II.

4. Closest focus distance of just 24cm across the zoom range

Because a close-focusing capability is essential in wide-angle photography, Tamron engineered a 0.24m (9.4") minimum focus distance across the zoom range. This capability gives the user freedom to create images with an exaggerated perspective at the 10mm ultra wide-angle end and shoot with a maximum magnification ratio of 1:5 at the 24mm semi-wide-angle setting, the largest magnification ratio in its class.

5. Flower-shaped Lens Hood is a standard accessory

A glare-reducing, Flower-shaped Lens Hood is included as a standard accessory. The special hood provides optimum shading of light rays that enter from the rectangular frame outside the image field.

6. New external design expressing “state-of-the-art ultra wide-angle zoom lens” in the digital era

• The new zoom lens features a refined exterior design that enhances its uniformity and smoothness, matching the designs of current digital SLRs.
• The metallic finish of the gold band on Tamron lenses makes it stand out as a Di II lens, and the layout of alphanumeric markings, including the TAMRON logo in the centre of the control ring, has been improved for greater visibility.
• Exquisite black matt finish is applied to the black paint over the lens barrel for improved quality of appearance.
• The rubber patterns on the zoom and focus rings have been enhanced to complement today’s digital camera design style and ensure better handling.

Notes
Tamron’s conversion value is 1.55x.
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 24mm x 16mm.
*As of August 2008, according to Tamron’s research on ultra wide-angle lenses designed exclusively for digital SLR cameras.

SPECIFICATIONS

*Values given are for Nikon mounts.
**Nikon mount has a built-in AF motor.

NOMENCLATURE

Digitally Integrated Design for DSLRs with small sensors

Di II lenses are designed for exclusive use on digital SLR cameras with APS-C-format image sensors. All Di II lenses are optimised to meet the performance characteristics of DSLRs, providing maximal resolution concentrated within the image field and assuring that light rays at the edges of the frame reach the sensor at favourable angles, thereby minimising peripheral light falloff.

In addition, all Di II lenses incorporate effective measures to increase light transmission and eliminate ghosting and flare, which are particularly noticeable with digital cameras. Tamron’s advanced multi-coatings are applied not only to external and internal lens surfaces, but also to surfaces in between cemented lens elements. Finally, Di II lenses are offered in a wide array that includes the focal length ranges most desired by DSLR shooters.

Super Performance series

Tamron SP (Super Performance) series is a line of ultra-high-performance lenses designed and manufactured to the exacting specifications demanded by professionals and others who require the highest possible image quality. In creating SP lenses Tamron’s optical designers put their foremost priority on achieving superior performance parameters – they are all designed to a higher standard with little regard for cost constraints. As a result, Tamron lenses bearing the SP designation feature impressive and innovative designs that have established an enviable reputation for excellence among those knowledgeable photographers that demand the very best.

Low Dispersion

Chromatic aberration occurs when a lens element refracts different wavelengths of a ray of light – its rainbow colours – at very slightly different angles. This results in the 'colour fringing' that reduces the sharpness of an image. LD elements are made from special glass materials with extremely low dispersion indices (i.e. the refraction of a ray of light into rainbow colours is extremely narrow). Thus they effectively compensate for chromatic aberration at the centre of the field (on axis), a particular problem at long focal lengths (the telephoto end of the zoom range), and for lateral chromatic aberration (toward the edges of the field) that often occurs at short (wideangle) focal lengths. Although costly, LD glass materials result in clear, vivid image quality.

Aspherical

Tamron uses several hybrid aspherical lens elements in its lenses bearing the Aspherical designation. These innovative optics achieve the ultimate in image quality while producing lenses that offer remarkable zoom ranges in extraordinarily compact packages. These cutting-edge advances have advanced the state of optical design by virtually eliminating spherical aberration and image distortion from Tamron's high-power-zoom series.

As one hybrid aspherical lens element can take the place of multiple elements without compromising performance, remarkably compact long-range lenses can now deliver a uniformly high level of image quality across all focal lengths and apertures.

Internal Focusing

Tamron's internal focusing (IF) mechanism provides numerous practical benefits to photographers including:

• a non-rotating front filter ring that facilitates the positioning of polarising and graduated filters
• more predictable handling because the lens length does not change during focusing
• a much closer minimum focusing distance (MFD) throughout the zoom range
• improved optical performance by minimising loss of illumination at the corners of the image field (vignetting)
• suppression of other aberrations that become more troublesome at different focusing positions.

Specifications, design, product name and standard accessories may differ by country or area. While every effort has been made to ensure accuracy, these matters are subject to change by the manufacturer without notice or obligation.

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