TAMRON
DEVELOPS WORLD'S FIRST [1] FULL-SIZE, HIGH SPEED STANDARD ZOOM WITH
BUILT-IN IMAGE STABILIZATION - SP 24-70MM F/2.8 DI VC USD (MODEL A007)
New
Super Performance full-frame zoom lens features class-leading
resolution and Tamron's proprietary VC (Vibration Compensation)
February 6, 2012, Saitama, Japan －
Tamron Co., Ltd. (President & CEO: Morio Ono / Headquarters:
Saitama City), a leading manufacturer of optical equipment, announced
the development of the SP 24-70mm F/2.8 Di VC
USD (Model A007), the world's first1 full-size high-speed standard zoom
lens equipped with VC (Vibration Compensation) image stabilization and
USD (Ultrasonic Silent Drive)[2], with resolution at the top of its class. The lens will be developed for Canon, Nikon and Sony mounts. A release date has not been announced.
Product Features
1. World's first full-size, high-speed standard zoom with built-in VC (Vibration Compensation)[3].
Even when shooting in low-light conditions with a slow shutter speed to
render sharpness, Tamron's acclaimed VC allows for stable handheld
camera work, to more fully enjoy the benefits of this high-speed zoom
lens.
2.
Uses specialized high-grade glass in the three LD elements, three Glass
Molded Aspherical Lenses, one Hybrid Aspherical Lens and two XR (Extra
Refractive Index) glasses, delivering top-of-the-class quality images
suited to this high-grade lens. Using a rounded diaphragm[4], the lens achieves gorgeous blur effects.
3. Features USD (Ultrasonic Silent Drive) to power a speedy AF drive together with a continuous manual mechanism.
4. This high-speed standard zoom lens has a wide-end focal length of 24mm that expands the photographic area.
5.
The lens adopts the new technology including the latest optical design,
VC (Vibration Compensation) image stabilization and USD (Ultrasonic
Silent Drive), all in a lighter and more compact package.
6. Moisture-resistant construction helps prevent water from penetrating the lens.
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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 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. 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, 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.
Because
the 24-70 mm F/2.8 Di VC USD is a high-speed zoom lens with maximum
aperture of F/2.8, its VC system must drive a lens that is larger and
heavier than other zooms. Therefore,
the shape, size and layout of the drive coils are all designed to
obtain sufficient thrust. The result is a full-size, high-speed zoom
that provides the same high level of compensation effect.
About 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.
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| About Tamron
Tamron
is a leading manufacturer of photographic lenses. Among its many
optical and mechanical innovations since the founding of the company in
1950, Tamron's development of mass-produced hybrid Aspherical elements
paved the way for today's compact high power all-in-one lenses when, in
1992, this technology was incorporated into the ground-breaking
28-200mm. Tamron continues to lead in this category of lenses with the
new 18-270mm Di II VC PZD - the world's smallest and lightest 15X zoom
lens featuring Tamron's propietary VC (Vibration Compensation) system
for blur-free hand-held shooting of photos in low light and at telephoto
settings and PZD (Piezo Drive) autofocus system for fast and quiet AF
operation. Tamron has garnered international acclaim for its extensive
line-up of professional and consumer lenses.
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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 AF28-300mm F/3.5-6.3 XR 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[8]
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 will be effective beginning with
the 18-270mm F/3.5-6.3 Di II VC PZD (Model B008).
The
"N" classification lenses with coupler systems are: AF28-300mm
F/3.5-6.3 XR Di (Model A061); SP AF200-500mm F/5.6-6.3 Di (Model A08);
and SP AF180mm F/3.5 Di (Model B01).
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2/12
[1] For
high-speed standard zoom lens compatible with full frame size SLR
cameras except with Sony full frame size SLR cameras. Current as of
February 2012. (Source: Tamron).
[2] USD (Ultrasonic Silent Drive) is Tamron's proprietary ultrasonic motor drive.
[3] The
Sony mount does not include VC, because the body of Sony digital SLR
cameras includes image stabilization functionality. The product name for
Sony cameras is "SP 24-70mm F/2.8 Di USD" without the VC designation.
[4] This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.
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