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May 15, 2008, Commack, NY — Tamron USA, Inc. announced release of
the AF28-300mm F/3.5-6.3 XR Di VC LD Aspherical (IF) MACRO, a high
power zoom lens compatible with full-size SLR cameras, now features a
built-in AF motor for use with Nikon DSLRs (Model A20NII) and featuring
Tamron’s proprietary VC (Vibration Compensation) mechanism.
Since its introduction in October 2007, Tamron’s AF28-300mm VC zoom
lens has been highly evaluated by many photographers the world over as
a compact and high power zoom lens providing a 4-stop shutter speed
advantage when VC is turned on. The lens covers an angle of view
equivalent to that of a 465mm ultra telephoto lens when mounted on a
digital SLR camera equipped with an APS-C size image sensor. The ultra
telephoto range is one where Tamron’s proprietary VC (Vibration
Compensation) mechanism exhibits its compensation performance to the
maximum extent. The lens enables the user to enjoy ultra
telephotography with amazingly stabilized viewfinder images. Covering
an angle of view equivalent to 43mm at its wideangle end, the lens lets
the user respond to a wider variety of scenes than do tele-zoom lenses
in the 70-300mm class.
The AF28-300mm F/3.5-6.3 XR Di VC (IF) MACRO is a compact and high
power zoom lens that can be used as a standard zoom. It allows not only
the users of conventional film SLR cameras and full frame DSLRs, but
also owners of digital SLR cameras equipped with APS-C sized image
sensors to comfortably enjoy SLR photography with 465mm-equivalent
ultra telephoto without hand shake.
*35mm-format equivalent. When used on digital SLR cameras equipped with
APS-C sized image sensors. When mounted on a digital SLR camera
equipped with an APS-C sized image sensor. 35mm format equivalent
(Tamron’s conversion value is 1.55x)
MAIN FEATURES
VC (Vibration Compensation) Mechanism Reduces Hand-shake
The proprietary VC (Vibration Compensation) mechanism developed by
Tamron features a triaxial configuration using three pairs of driving
coils and slide balls around the compensator group of the lens’ optical
system. Since the compensator lenses are supported with rolling
friction of the balls, the response performance is enhanced and the
construction is simple, which results in the compactness of the lens.
The lens incorporates a highly accurate gyro sensor for detecting
hand-shake, which, combined with a 32-bit RISC CPU, offers comfortable
anti-vibration effects. The result is a lens that offers excellent
vibration compensation—4 extra stops can be gained when VC is turned on.
Outstanding Design Realizing High Zoom Power, VC Mechanism and Compactness
The AF28-300mm F/3.5-6.5 XR Di VC integrates optical technologies that
Tamron has accumulated as the pioneer and leader of high power zoom
lenses in order to realize the desired compactness even while
incorporating the VC mechanism. The optical system uses a number of
lens elements made from special optical glass materials including XR
(high refraction index) glass elements, GM (glass-molded) elements,
hybrid aspherical elements, LD (low dispersion) glass elements to
compensate for on-axis and lateral chromatic aberrations and AD
(anomalous dispersion) glass element. The lens offers high contrast,
high resolution performance and flatness of the image field as a
one-does-it-all zoom lens designed to match the characteristics of DSLR
cameras.
Revolutionary 19.3” MFD Throughout Zoom Range Provides 1:3 Macro
The AF28-300mm F/3.5-6.3 XR Di VC MACRO boasts an MFD (minimum focusing
distance) of 19.3” (0.49m) over the entire zoom range, a top-class
close focusing capability among high power zoom lenses for full-size
format SLR cameras, which provides the remarkable maximum macro
magnification ratio of 1:3 at the 300mm telephoto end.
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