Tamron's next generation 18-270mm, the world’s lightest, smallest 15x zoom optimized for use on APS-C DSLRs, continues the pursuit of the ideal all-in-one zoom lens. Combining prior award-winning achievements with new engineering breakthroughs yielded the remarkable 18-270mm F/3.5-6.3 Di II VC PZD (Piezo Drive). Special piezoelectric technology now delivers faster, quieter precision autofocusing. Tamron's exclusive tri-axial VC (Vibration Compensation) image stabilization, featuring three pairs of driving coils and low-function ball bearings placed around the VC optical group, combats camera shake-related image blur. It's Tamron VC that allows handheld shooting at as many as four shutter speeds slower than otherwise possible with a dramatically stable viewfinder experience. Compactness and light weight are preserved, thanks in part to the VC mechanism's newly-developed moving coil mechanism.
Defining compositional freedom the 18-270mm Di-II VC's incredible 15x zoom range provides a 35mm picture angle equivalency of 28mm to 419mm, with image fidelity assured by advanced optical design featuring LD glass and aspherical optics, working in concert to render crisp, colorful and faithful images.
Compact and Easy to Carry 15X All-in-One Zoom with Outstanding Feature Set The 18-270mm Di II VC PZD boasts the world’s highest zoom range at 15x magnification for a lens with its compact size and light weight (Current as of December 2010, Source: Tamron). At 15.9 ounces, measuring 3.8 inches in length (from mount face to the tip of the lens), and 2.9 inches in diameter with a filter diameter of Ø62mm, it’s a compact and easy-to-carry lens. Its minimum focal distance of 0.49m (19.3 in) through the entire zoom range and macro capability to 1:3.8 allows you to enjoy serious, high-quality macro photography with unaccustomed convenience.
PZD (Piezo Drive) Piezoelectric AF Motor Piezoelectric drive replaces traveling wave energy with more efficient standing wave energy for higher AF performance with less weight and bulk. A vital contributor to compactness, PZD focuses quickly and precisely, assuring sharper results in demanding conditions with speed that captures spontaneous moments crisply - moments that might otherwise be lost to image softness. PZD is exceptionally quiet, making it ideal for nature, live performance shooting, golf and other conditions that demand quiet operation.
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 handheld shots for cleaner, crisper shots.
Abundance of Special Glass Materials Two Low Dispersion (LD) glass elements minimize “on-axis aberration” that degrades the sharpness in telephotography and “lateral chromatic aberration”, an image degrading factor in wide-angle photography. In addition, three hybrid aspherical elements are used to compensate distortion.
Zoom Lock (ZL) Feature Another original Tamron mechanical engineering concept is the Zoom Lock (ZL), a simple convenience feature that prevents undesired extension of the lens barrel when carrying the camera/lens unit on a neck strap.
Digitally Integrated (Di-II) Lens Optimized for APS-C Format Digital SLR Cameras Tamron Di-II lenses are engineered expressly for digital SLR cameras with image sensors commonly referred to as APS-C, measuring approximately 24mm x 16mm. Rendering an ideal image circle for APS-C sensors, Di-II lenses also include properties to optimize digital imaging performance.
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