Tamron Developing 70-200mm Tele Zoom

SP 70-200mm F/2.8 Di VC USD for Canon, Nikon and Sony mounts

September 13, 2012, 4PM JST, Saitama, Japan - Tamron Co., Ltd.
(President and CEO: Morio Ono / Headquarters: Saitama City), a leading
manufacturer of optical equipment, announced the development of a
full-size, high-speed telephoto zoom lens equipped with VC (Vibration
Compensation)2 image stabilization, and USD (Ultrasonic Silent Drive)3
that achieves leading-edge image quality while boasting the most compact
design in its class. The SP 70-200mm F/2.8 Di VC USD will be available
in Canon, Nikon and Sony[4] mounts. The lens is expected to ship by the
end of 2012. Pricing information will be announced at a later date.

Product Features
• One special XLD (Extra Low Dispersion)[5] glass in concert with
four LD (Low Dispersion) elements minimize chromatic aberrations. This
combined with a new optical design that delivers high contrast and high
resolution throughout the zoom range achieves leading-edge image
quality.
• OneTamron's advanced multi-layer coating technology
dramatically improves lens performance by reducing flare and ghosting
for crisper, clearer images.
• OneThe rounded diaphragm[6]
affords the photographer spectacular blur effects, delivering the kind
of rich expression only achievable with a high-speed telephoto zoom
lens.
• OneThe most compact full-size, high-speed telephoto zoom
lens with VC (Vibration Compensation) image stabilization and USD
(Ultrasonic Silent Drive) in its class delivers superior mobility,
enabling photographers to capture the previously unattainable.
• OneFeatures USD (Ultrasonic Silent Drive) to power a speedy AF drive together with a continuous manual focus mechanism.
• OneThe VC (Vibration Compensation) image stabilization mechanism reduces camera shake to deliver sharp images.
• OneMoisture-resistant construction helps prevent moisture from penetrating the lens.  

Image Stabilization and Focusing Systems
• VC (Vibration Compensation)
VC
(Vibration Compensation) is Tamron's proprietary image stabilization
system. Tamron's VC is a three-coil system, whereby three driving coils
activate the shake-compensating VC lens group electromagnetically via
three ceramic balls. The VC lens elements are held in place only by
contact with the ceramic balls, achieving smooth movement with little
friction. This provides a stable viewfinder image with excellent
tracking performance. And as the VC lens may be moved in parallel using
only the motorized control, the mechanical structure has been
simplified, enabling the creation of a more compact lens.

• New VC System (moving coil method)
Tamron's
original VC image stabilization mechanism utilized a moving magnet
system whereby a heavy magnet was positioned near the moving VC lens
element. In the new VC unit, the positions of the magnet and the coil
are reversed, and because of this the VC optical lens element is
attached to the coil. The new VC mechanism employs a moving coil
mechanism with a lightweight coil, and the lighter coil reduces the load
on the drive system. Thus, the lighter, more compact new VC unit
contributes to the lens's overall light weight and compact size.


• The Ultrasonic Motor
In
the ultrasonic motor, a piezoelectric element arranged in a ring
formation generates ultrasonic vibrations in a metallic ring stator, and
the vibration energy is used to rotate a metallic ring rotor that is
attached to the stator. The rotation energy is in turn transferred from
the metallic ring rotor to operate the focus lens.
 
Excellent Companion to Tamron's Fast Standard Zoom
Tamron's
SP 24-70mm F/2.8 Di VC USD (Model A007) is a high-speed standard zoom
lens that is also equipped with four features: superior image quality,
USD (Ultrasonic Silent Drive), advanced VC (Vibration Compensation), and
is designed for full-size SLR cameras. By combining these two lenses,
the focal length will be extended from wide 24mm to telephoto 200mm.

Notice of Classification Code Change for Nikon Mounts
Since
the introduction by Tamron of the first Nikon mount lens featuring an
internal AF motor, the 28-300mm Di VC (Model A20), all Nikon mount
lenses with the internal AF motor had used the classification code "N
II." Lenses using a coupler system[10] without an internal AF motor were
designated as "N." Because future Nikon lenses will have the internal
AF motor as a standard feature, Tamron has decided to simplify the
designation and consolidate all Nikon mount lenses as "N," eliminating
the "N II" designation for future models. This classification code
change was made effective with the 18-270mm Di II VC PZD (Model B008).
 
The
"N" classification lenses with coupler systems (no internal AF motor)
are: SP 200-500mm Di (Model A08); and SP 180mm F/3.5 Di (Model B01).

[1]
For high-speed telephoto zoom lenses for full-size SLR cameras,
equipped with VC image stabilization and USD. Current as of September
2012. (Source: Tamron)
[2] VC (Vibration Compensation) is Tamron's proprietary image stabilization mechanism.
[3] USD (Ultrasonic Silent Drive) is Tamron's proprietary ultrasonic motor drive.
[4]
The Sony mount does not include VC, as Sony digital SLR bodies include
image stabilization functionality. The Sony lens is designated as "SP
70-200mm F/2.8 Di USD"
[5] The XLD (Extra Low Dispersion) glass is
made from specialized high-grade glass, which offers greater chromatic
aberration correction properties than LD (Low Dispersion) elements.
[6] This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.
[7] Length, entire length and weight values given are for the Nikon mount.
[8] Entire length is the distance between the tip of the lens and the tip of the protrusion.
[9] Length, entire length and weight values given are for the Nikon mount.
[10] Coupler system refers to a system that uses a shaft to harness the AF motor built into the camera body to operate the lens.

About Tamron
Tamron
is a recognized leader in the manufacture of precision optics offering a
broad selection of meticulously engineered interchangeable lenses for
professional photographers and photo enthusiasts. Founded in 1950,
Tamron's passion for innovation brought forth the ground-breaking
development of mass-produced hybrid Aspherical elements, giving way to
enormously popular compact, wide-range zoom lenses. Dynamic research and
development , committed to advanced optical engineering, has produced a
stream of award-winning Tamron lenses and defined the All-in-One zoom
lens category, exemplified by 2010's 18-270mm Di II VC PZD.
Astonishingly compact and lightweight, this 15X zoom features
proprietary VC (Vibration Compensation) technology, effectively
counteracting image-degrading blur caused by camera shake along with a
fast, quiet PZD (Piezo Drive) autofocus mechanism. Tamron lenses deliver
a superb fusion of performance and value, enabling today's
high-resolution digital SLR cameras to perform at their peak. Tamron's
lenses have received numerous prestigious awards from around the world,
including 14 EISA (European Imaging & Sound Association) awards, 7
of which were awarded consecutively since 2006.

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