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Draw on the beauty of light

A constant-aperture high-speed standard zoom lens with image stabilisation

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Focal length: 70mm
Exposure: 1/125s f/8 ISO100

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Focal length: 70mm | Exposure: f/2.8 1/80s ISO100

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Focal length: 24mm (on full-frame DSLR)

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Focal length: 70mm (on full-frame DSLR)

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Focal length: 70mm | Exposure: 1/15s f/5.6 ISO400
Even at two stops down from maximum aperture, the blurred highlights appear naturally circular

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Lens with standard hexagonal diaphragm shape

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Tamron A007 with rounded diaphragm shape

Photo Review Editor's Choice - click to see the full review on their websitePhotographic artists have been waiting for a full-featured, constant-aperture zoom lens. The wait is over.

The A007 is a high-quality, highly functional, high-speed standard zoom lens covering the 24‒70mm focal range. It includes both Tamron's proprietary VC (Vibration Compensation) image stabilisation to reduce shake and its USD (Ultrasonic Silent Drive) motor, enabling speedy, silent autofocusing.

This SP (Super Performance) series lens makes full use of specialised glass elements in its lens layout, designed with top priority on image quality, including three LD (Low Dispersion) elements and two XR (Extra Refractive Index) glasses. Tamron has minimised all types of chromatic aberration in the A007, making it a lens at the top of its class whether you use it on a digital APS-C, full-frame, or 35mm SLR camera.

The A007 combines a constant f/2.8 maximum aperture and Tamron's rounded diaphragm* for an ideal character of brilliant resolution and beautifully soft, natural-looking blur effects.

It is also Tamron's first lens to feature our new moisture-resistant construction, making it an ideal choice for outdoor shooting. Portraits. Landscapes. Studio shoots. This is the lens for them all.

Capture the finest details of your images in precisely the way you have always wanted to. Extend your art to the limits of your inspiration with the Tamron A007.

  1. For fast-aperture standard zoom lens compatible with full-frame size SLR cameras except with Sony full-frame size SLR cameras.Current as of February 2012. (Source: Tamron).
  2. USD (Ultrasonic Silent Drive) is Tamron's proprietary ultrasonic motor drive.
  3. The Sony mount does not include VC, because the body of Sony digital SLR cameras includes image stabilisation functionality. The product name for Sony cameras is "SP 24-70mm F/2.8 Di USD" without the VC designation.
  4. This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.

Optical design

Optical diagram
XR (Extra Refractive Index) glass
Hybrid Aspherical Lens
Glass Molded Aspherical Lens
LD (Low Dispersion) element

Advanced optical technology

Specialised high-grade glass in the three LD elements, three Glass Molded Aspherical Lenses, one Hybrid Aspherical Lens and two XR (Extra Refractive Index) elements all contribute to the top-of-class image quality expected of a high-grade Tamron SP lens.

xrExtra Refractive Index

More compact lenses with superior image quality

XR (Extra Refractive Index) glass can bend light rays at steeper angles, thereby decreasing the physical length of the lens while enhancing imaging performance by minimising optical aberrations. With its superior light-bending power, XR glass makes it possible to design a short-barrel lens with the same light-gathering ability (aperture value) as a long-barrel lens – even with a smaller lens diameter. By using this principle Tamron has been able to shorten the length of the entire optical system and produce lighter, more compact lenses of the same speed, and also to provide greater zoom ranges in lenses that are much more convenient to carry and hand-hold.

XR glass is costlier than conventional glass but it yields enhanced optical power distribution, making the innovative XR lens designs possible.

ASLAspherical

Far superior image quality – while reducing lens size and weight

Tamron uses several hybrid aspherical lens elements in its lenses bearing the Aspherical designation. The benefits are two-fold: first, their non-spherical shapes virtually eliminate spherical aberration and image distortion. Second, as one hybrid aspherical lens element can take the place of multiple elements without compromising performance, they allow the lens to be much more compact.

As a result, these innovative optics have played a crucial role in delivering uniformly high image quality across all apertures and focal lengths of extraordinarily compact ultra-zoom lenses.

Hybrid aspherical construction

LDLow Dispersion

Sharpens edges by reducing 'colour fringing'

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.

Low Disperison glass

Rounded diaphragm blades give natural-looking circular blur highlightsRounded diaphragm

The rounded outline diaphragm of the lens is retained even when stopped down to f/5.6. Blur highlights in a photo reflect the shape of the aperture, and they are a much more prominent feature at wider apertures. In this high-speed lens, this important optical design element results in more attractive, natural-looking images.

Moisture resistance adds protection

Moisture-resistant body construction helps prevent water from penetrating the lens, making it well suited ideal for travel and shooting outdoors.

Flower-shaped hood is supplied with the lens to shield stray light

Included as a standard accessory, the flower-shaped hood matches the rectangular shape of the image sensor to most effectively block the interference of superfluous light rays entering from outside the borders of the image area, helping to ensure sharp, clear, flare-free images with crisp detail in the shadow areas.


Other features

SPSuper Performance series

Performance takes priority for superb image quality

This line of ultra-high-performance lenses is designed and manufactured to the exacting specifications demanded by professionals and others who require the highest possible image quality. The foremost priority is achieving superior performance parameters – high design standards take priority over cost constraints. As a result, Tamron SP lenses feature innovative designs that have established an enviable reputation for excellence amongst demanding photographers.

This lens features the gold metal ring that symbolises the SP series, and other design elements that boost its looks.

VCVibration Compensation

Compensates for camera blur on long shutter speeds – for sharp images in much less light

Tamron's unique VC mechanism uses a proprietary actuator and algorithms to deliver an extremely stable viewfinder image with excellent tracking. The tri-axial system uses three driving coils to move internal optical components within the VC lens electromagnetically, based on signals originating from three ball bearings, made from either steel or ceramic. The VC lens elements are held in place only by contact with the balls, achieving smooth movement with minimal friction.

Tamron's original moving magnet system employed a heavy magnet positioned near the moving VC lens element. The improved VC reverses the positions of magnet and coil and attaches the VC optic to the coil. This moving coil is lighter than the magnet, and as this reduces the load on the drive system, both the VC unit and the lens are lighter and more compact.

Vibration Compensation mechanism in Tamron lenses

VC on, VC off

* The Sony mount lens does not include VC, because the body of Sony digital SLR cameras includes image stabilisation functionality. The product name for Sony cameras is "SP 24-70mm F/2.8 Di USD" without the VC designation.

USD Ultrasonic Silent DriveUltrasonic Silent Drive

'Travelling waves' generate a fast, smooth AF movement

Tamron’s USD works with the high-frequency ultrasonic vibrations that are produced by a ring called a ‘stator’. Energy from the vibrations is used to rotate an attached metallic ring known as the ‘rotor’. Piezoelectric ceramic is a material that produces ultrasonic vibrations when voltage of a specific frequency is applied is arranged in a ring formation on the stator. This electrode configuration of piezoelectric ceramic causes two ultrasonic vibrations to occur in the stator. By effectively combining these two ultrasonic vibrations, it is possible to convert the energy from the vibrations that produce simple motion into energy known as ‘deflective travelling waves’, which move around the circumference of the ring. The friction between these deflective travelling waves created on the metallic surface of the stator and the surface of the rotor produces force, causing the rotor to rotate. Attached to the rotor is the focusing lens, which is given a fast, smooth autofocus movement.

Watch this feature in action on our YouTube channel

DMF - Direct Manual FocusFine manual focus adjustments can be made quickly and easily

The USD motor is complemented by DMF (Direct Manual Focus) to enable manual fine-tuning after autofocusing if and when necessary. No need to engage a switch – just gently rotate the focus ring on the lens.

Moisture resistance adds protection

Moisture-resistant body construction helps prevent water from penetrating the lens, making it well suited ideal for travel and shooting outdoors.

Flower-shaped hood is supplied with the lens to shield stray light

Included as a standard accessory, the flower-shaped hood matches the rectangular shape of the image sensor to most effectively block the interference of superfluous light rays entering from outside the borders of the image area, helping to ensure sharp, clear, flare-free images with crisp detail in the shadow areas.

Specifications

Model no. A007
Focal length 24-70mm
Maximum aperture f/2.8
Angle of view (diagonal) 84° 4' to 34° 21' (full-frame 35mm format)
60° 20' to 22° 33' (for APS-C format)
Lens construction 17 elements in 12 groups, including:
3x LD elements
3x glass molded aspherical lenses
1x hybrid aspherical lens
2x XR (Extra Refractive Index) elements
Minimum focus distance 0.38m (15.0in.)
Maximum magnification ratio 1:5 (at f=70mm: MFD 0.38m)
Filter size 82mm
Length[1]* 108.5mm (4.3in.)
Overall length[2]* 116.9mm (4.6in.)
Maximum diameter 88.2mm (3.5in.)
Weight* 825g (29.1oz)
Diaphragm blades 9 (rounded diaphragm)
Minimum aperture f/22
Standard accessory Flower-shaped Lens Hood
Mounts available Canon AF, Sony (Konica Minolta), Nikon AF-D

Specifications, appearance, functionality, etc. may change without prior notice.
*Length, entire length and weight values given are for the Nikon mount.
1. Distance between the mount face and the tip of the lens.
2. Distance between the tip of the lens and the tip of the protrusion.

Mounts available for this lens

Nikon | Canon | Sony

DiDigitally Integrated

Optimal image quality on both digital and film SLRs

Di is a Tamron designation that applies to lenses that have been optimised for digital capture using advanced multi-coating techniques and optical designs that assure excellent image quality across the entire picture field. Because of these characteristics, Di lenses provide outstanding performance on cameras with full-frame and APS-C format sensors as well as on 35mm film.

Tamron's Di range

Click to download the Australian brochure for this product

Australian brochure
April 2012

Click to download the Tamron general brochure for 2011

Tamron Lens Catalogue 2011

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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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