Tamron has announced another addition in the telephoto lens family with the release of its anniversary model Tamron SP 70-300mm Telephoto Zoom Lens, with Extra Low Dispersion (XLD) lens, featuring an ultrasonic auto-focus drive Ultrasonic Silent Drive (USD) and Vibration Compensation (VC) image stabilization, that makes the lens fast, quiet and easy to use.
The Tamron F/4-5.6 Di VC USD (Model A005) is an Extra Low Dispersion (XLD) lens made from high-grade materials and this high-resolution DSLR telephoto zoom lens is available for the Nikon mount on August 26, 2010, with the launch of mounts for Canon and Sony to follow.
This new lens from Tamron is designed for digital SLR cameras, and it can be used with both full-frame sensor and AF 35mm cameras with a zoom range of 70-300mm; or with APS-C sensor cameras where the angle of view will change the zoom range equal to 109-465mm.
The Tamron 70-300mm Di VC USD (Model A005) offers superior optical performance and features Tamron’s own USD (Ultrasonic Silent Drive) and VC (Vibration Compensation), which provides the performance of a high-end premium telephoto zoom that is appealing to a broad spectrum of photography enthusiasts.
Tamron’s Anniversary lens SP AF70-300mm Di VC USD (Model A005) utilizes an advanced optical design that features an LD (Low Dispersion) and an XLD (Extra Low Dispersion) lens element made from specialized materials that prevent chromatic aberration delivering the most outstanding image resolution in the 70-300mm class and boasts sharper contrast and greater descriptive performance than all others in its class.
In addition, the SP AF70-300mm Di VC USD (Model A005) lens is the first Tamron lens sporting a USD (Ultrasonic Silent Drive), Tamron’s very own ultrasonic auto-focus drive mechanism. This USD mechanism delivers fast focusing, making it a perfect telephoto zoom choice for photographing sports, racing, or other fast-moving subjects.
The SP AF70-300mm Di VC USD (Model A005) lens also boasts Tamron’s proprietary VC (Vibration Compensation) image stabilization to assist in hand-held photography, not only at long focal length ranges where blurring is common, but also under low-lit conditions, dramatically enhancing photographic freedom.
New optical system featuring specialized glass elements including an XLD (Extra Low Dispersion) lens
The Tamron SP AF70-300mm Di VC USD lens’ advanced optical design employs a sophisticated XLD (Extra Low Dispersion) lens element made from specialized high-grade glass that has lower dispersive properties than standard LD lenses, where refraction causes the dispersion of white light into spectral hues. The result is a lens that delivers sharp contrast and better descriptive performance throughout the entire zoom range.
Fast focusing USD (Ultrasonic Silent Drive), the ultrasonic autofocus drive
The Tamron SP AF70-300mm Di VC USD lens is equipped with Tamron’s first-ever ultrasonic auto-focus drive USD (Ultrasonic Silent Drive) to achieves faster focusing making this telephoto lens perfect for photography of sports, motor racing, and other fast-moving subjects.
USD (Ultrasonic Silent Drive)
Tamron’s Ultrasonic Silent Drive (USD) technology 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’. The focusing ring lens, which is linked to the rotor, is thus moved, creating a fast and smooth auto-focus drive.
Tamron’s VC (Vibration Compensation) image stabilization
The Tamron SP 70-300mm Di VC USD Telephoto Zoom lens employs Tamron’s esteemed image stabilization mechanism–VC (Vibration Compensation) seen in both the AF18-270mm Di II VC (Model B003) and SP AF17-50mm F/2.8 XR Di II VC (Model B005) allowing the photographer has the freedom to shoot at a shutter speed that is an extra four stops slower without having to worry about blurring.
VC (Vibration Compensation)
Tamron’s VC mechanism employs a three-coil system, whereby three driving coils activate the shake-compensating VC lens group electromagnetically via three steel balls. The VC lens elements are held in place only by contact with the steel balls, achieving smooth movement with little friction. This provides a stable viewfinder image with excellent tracking performance that eliminates the blur from camera shake for cleaner, crisper shots.
Full time manual focus
The Full time manual in Tamron SP 70-300mm Di VC USD Telephoto Zoom lens Telephoto lens offers the crossover from auto-focus to manual focus by simply adjusting the focus ring, allowing the photographer to make adjustments on the fly. This feature helps the lens produce impressive results even in telephoto situations where the depth of field is narrow.
When focusing, the internal elements of the lens move and the lens’ external size does not change. This offers better balance and easier telephoto shots. Moreover, the barrel is not subject to stray light entering from external helicoids that can negatively affect images. And because the external elements do not move, it makes it easier to utilize polarizing filters and the flower shape hood to control the amount of light that enters the lens.
With a full-frame digital or 35mm SLR, portrait and medium telephoto shots can be achieved on the wider 70mm end of the range and spectacular telephoto shots at the longer 300mm side. When using an APS-C sensor camera, the angle of view changes, giving it the equivalent range of 109-465mm for bold ultra-telephoto shots. And with a maximum magnification ratio 1:4, the lens can be used to explore in the realm of semi-macro photography.
Reduced ghosting and flare
Tamron incorporates new BBAR (Broad-Band Anti Reflection) multilayer coatings in SP 70-300mm Di VC USD Telephoto Zoom lens that reduce reflection into the lens elements. Also, Tamron applies internal surface coatings on cemented surfaces of lens elements to make images sharper with better color reproduction and balance.
- Focal length: 70 – 300mm
- Maximum aperture: F/4 – 5.6
- Angle of view (diagonal): 34 degree 21? – 8 degree 15’
- Lens construction: 17 elements, 12 groups
- Minimum focus distance: 59.1 inch
- Maximum magnification ratio: 1:4 (at f = 300mm: MFD 1.5m)
- Filter size (mm): Ø62mm
- No. of diaphragm blades: 9
- Minimum aperture: F/32-45
- Compatible mounts: Canon, Nikon, Sony
The Tamron SP 70-300mm Di VC USD Telephoto Zoom lens are available for $449 (Rs. 20,900 approx) with one year warranty.