Tamron SP 70-300mm f/4-5.6 Di USD (Sony)
Warranty: 2 Year + 1 Year by DSC World Sdn Bhd (Tamron Sole Distributor in Malaysia)
List Price: RM1,980.00
Best Price: RM1,820.00
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This premium, state-of-the-art, telephoto zoom lens is the culmination of decades of outstanding innovation in ultra-long-range zoom optics by Tamron. It provides professional and enthusiast users of full-frame and APS-C format digital SLR cameras with the ultimate in image quality and handling in the telephoto zoom class. Built to exacting SP (Superior Performance) standards, it delivers ultra-high resolution across the image field at all focal lengths, along with the first-ever USD (Ultrasonic Silent Drive) for extraordinary auto-focusing speed and responsiveness.
*The Sony mount does not include the VC image stabilization functionality, as the body of Sony digital SLR cameras includes image stabilization functionality. Consequently, the name of the Sony mounted lens, SP 70-300mm F/4-5.6 Di USD, does not include the VC description.
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 Tamrons optical designers put their foremost priority on achieving superior performance parametersthey 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.
Digitally Integrated Lenses for Top Imaging Performance
Di (Digitally Integrated Design) is a Tamron designation that applies to lenses that have been optimized 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.
ULTRASONIC SILENT DRIVE
Tamrons 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.
|Lens Construction (Groups/Elements)||9/10|
|Angle of View||27°|
|Diaphragm Blade Number||9|
|Minimum Focus Distance||0.29m|
|Macro Magnification Ratio||1:1|
|Diameter x Length||71.5 x 97mm|
|Accessory||Lens hood, case included|