70-200mm F/2.8 Di VC USD SP

Description

Technology and innovation all packed into one small place
The most compact*2 lens body in its class, and it’s equipped with Tamron’s USD (Ultrasonic Silent Drive) motor and VC (Vibration Compensation) image stabilization to reduce camera shake so you can achieve the previously unobtainable.

Delivering leading-edge image quality
With one special XLD (Extra Low Dispersion) glass(*3) and four LD (Low Dispersion) elements, this lens offers a new level of correction for chromatic aberrations. The new advanced optical design delivers higher performance with excellent contrast and resolution.

USD (Ultrasonic Silent Drive)
The quiet high-torque USD motor ensures a speedy and accurate autofocus response.

Add 4 stops for shake-free shooting: VC (Vibration Compensation)
This high-speed F/2.8 telephoto zoom lens is equipped with the VC mechanism that delivers sharp and vivid viewfinder images. Even in low-light situations, VC reduces camera shake to deliver sharp images.

Rounded diaphragm and high-speed deliver spectacular blur effects
Using a rounded diaphragm(*4), this lens achieves spectacular blur effects. By distinctively blurring backgrounds and foregrounds this high-speed lens creates images that bring your subject into focus, thus to life.

*2 For high-speed telephoto zoom lenses for full-size SLR camer as, equipped with VC image stabilization and USD. Current as of October 2012. (Source: Tamron)
*3 The XLD glass has much lower dispersion, similar to fluorite, than the conventional LD element
*4 This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.

Model	A009
Lens Construction (Groups/Elements)	17/23
Angle of View (Diagonal)	34°21′-12°21′ (with full-size SLR cameras) 22°33′-7°59′ (with APS-C sized sensor digital SLR cameras)
Minimum Aperture	F/32
Minimum Focus Distance	1.3m (51.2 in)
Macro Magnification Ratio	1: 8 (at f=200mm: MFD 1.3m)
Filter Diameter	ø77
Weight	1470g (51.9 oz)* (including detachable tripod mount)
Diameter	φ85.8mm
Length(*1)	188.3mm (7.4 in)*
Entire Length(*2)	196.7mm (7.7 in)*
Diaphragm Blade Number	9 (rounded diaphragm)(*3)
Accessory	Flower-shaped Lens hood
Mount	Canon, Nikon, Sony A mount(*4)

Specifications, appearance, functionality, etc. may be changed without prior notice.
*Length, entire length and weight values given are for the Nikon mount.
*1: Length is the distance between the mount face and the tip of the lens.
*2: Entire length is the distance between the tip of the lens and the tip of the protrusion.
*3: This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.
*4: The Sony mount does not include VC, as Sony digital SLR bodies include image stabilization functionality.

VC (Vibration Compensation) – The VC Image Stabilizer delivers sharp and shake-free images, as well as a smooth viewfinder image.

While other image-stabilization systems can only correct the effects of camera shake in horizontal or vertical planes, Tamron’s VC system uses a tri-axial configuration that employs three pairs of driving coils and low-friction ball bearings placed around the shake-compensating optical group to produce, in effect, a free-floating shake compensator. This simple, elegant system is able to compensate for camera shake that occurs in diagonal direction as well as for up-and-down and side-to-side movements. Furthermore, due to its simple, low-friction design it is more responsive and durable than previous systems. The Tamron 28-300mm VC and 18-270mm VC lenses incorporate a highly sensitive and accurate gyro sensor for detecting even the slightest hand shake, and that,combined with a 32-bit RISC CPU and Tamron’s proprietary Algorithms and actuator, provides unequalled real-world performance. The bottom line: Tamron VC provides up to a 4-stop advantage in shooting sharp handheld pictures at slower shutter speeds along with a smooth, stable viewfinder image that is the envy of other shake-control systems. You can expect to see the VC feature built into more Tamron lenses in the future.

Super Performance –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.

Internal Focusing (IF) System – The extension length of the lens does not change during focussing and the close focussing distance is significantly reduced across the entire focusing range.

USD (Ultrasonic Silent Drive) –

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, an element 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 produced simple motion into energy known as ‘deflective traveling waves’, which then moves around the circumference (rotation direction) of the ring.

With the USD, the friction between these deflective traveling waves created on the metallic surface of the stator and the surface of the rotor produce force, causing the rotor to rotate. The focusing ring lens, which is linked to the rotor, is thus moved, creating a fast and smooth auto-focus drive.

XLD (Extra Low Dispersion) Glass –A special glass with an extremely low colour dispersion index for the greatest level of sharpness and compensation of chromatic aberration.