Blog Archives

Tamron releases image-stabilized 24-70mm F2.8 zoom

Tamron has announced a 24-70mm F2.8 zoom for full frame cameras that features inbuilt optical stabilisation – a first in this class of lens. The SP 24-70mm F/2.8 Di VC USD, to give it its full name, also incorporates an Ultrasonic Silent Drive motor for autofocus, which allows full-time manual focus. The lens is moisture-resistant, and features a circular aperture diaphragm for the attractive rendition of background blur. It will be produced in Canon, Nikon and Sony mounts, with price and availability to be confirmed at a later date.

 Tamron develops full-size, high-speed standard zoom with built-in image stabilization – SP 24-70mm F/2.8 Di VC USD (Model A007)

With class-leading resolution and Tamron’s proprietary VC (Vibration Compensation)

Tamron Co., Ltd., a leading manufacturer of optical equipment, announced the development of the SP 24-70mm F/2.8 Di VC USD (Model A007), a full-size high-speed standard zoom lens equipped with VC (Vibration Compensation) image stabilization and USD (Ultrasonic Silent Drive), with resolution at the top of its class.

The price and availability of the SP 24-70mm will be announced at a later date.

Product Features

  1. A full-size, high-speed standard zoom with built-in VC ( Vibration Compensation). 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 special 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, the lens achieves gorgeous blur effects. This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.
  3. Features Tamron proprietary 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.

Read more @ dpreview

Tamron releases image-stabilized 24-70mm F2.8 zoom

Tamron has announced a 24-70mm F2.8 zoom for full frame cameras that features inbuilt optical stabilisation – a first in this class of lens. The SP 24-70mm F/2.8 Di VC USD, to give it its full name, also incorporates an Ultrasonic Silent Drive motor for autofocus, which allows full-time manual focus. The lens is moisture-resistant, and features a circular aperture diaphragm for the attractive rendition of background blur. It will be produced in Canon, Nikon and Sony mounts, with price and availability to be confirmed at a later date.

Tamron develops full-size, high-speed standard zoom with built-in image stabilization – SP 24-70mm F/2.8 Di VC USD (Model A007)

With class-leading resolution and Tamron’s proprietary VC (Vibration Compensation)

Tamron Co., Ltd., a leading manufacturer of optical equipment, announced the development of the SP 24-70mm F/2.8 Di VC USD (Model A007), a full-size high-speed standard zoom lens equipped with VC (Vibration Compensation) image stabilization and USD (Ultrasonic Silent Drive), with resolution at the top of its class.

The price and availability of the SP 24-70mm will be announced at a later date.

Product Features

  1. A full-size, high-speed standard zoom with built-in VC ( Vibration Compensation). 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 special 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, the lens achieves gorgeous blur effects. This rounded diaphragm retains a nearly circular shape even when taken two stops down from its fully open state.
  3. Features Tamron proprietary 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.

Read more @ dpreview

Tamron 18-270mm F/3.5-6.3 Di II VC PZD with Piezo Drive AF

Tamron has announced the 18-270mm F/3.5-6.3 Di II VC PZD superzoom lens, the first to incorporate the company’s Piezo Drive (PZD) technology that promises faster and quieter autofocus. A completely revised, smaller and lighter version of the popular AF 18-270mm F/3.5-6.3 Di II VC LD Aspherical (IF) Macro, it offers an enhanced Vibration Control (VC) image stabilization system, uses a new optical formula with fewer lens elements and takes 62mm filters. The lens will be available in Canon and Nikon mounts from December 20 followed by a Sony version next year.

TAMRON ANNOUNCES 60TH ANNIVERSARY MODEL 18-270MM Di II VC PZD — THE WORLD’S LIGHTEST, SMALLEST 15X ZOOM , WITH TAMRON’S FIRST PZD (PIEZO DRIVE) AF SYSTEM

A light, compact, ultra-high-power 15x zoom lens with PZD (Piezo Drive) the first Piezoelectric internal autofocus motor by Tamron exclusively for digital SLR cameras with APS-C(3) sized sensors.

Tamron Co., Ltd., a leading manufacturer of optical equipment, announced the release of yet another groundbreaking lens: the world’s most compact, lightweight lens with a 15x zoom ratio*1, featuring a 62mm filter diameter, VC (Vibration Compensation) image stabilization and Tamron’s first standing wave ultrasonic motor system for SLR lenses, PZD (Piezo Drive) *2. The 18-270mm F/3.5-6.3 Di II*3 VC PZD (Model B008) DSLR ultra-high-power zoom lens for Canon and Nikon mounts will be released December 20, 2010, with the development of a Sony*4 compatible mount at a later date. This is the second lens released to commemorate Tamron Co., Ltd.’s 60th anniversary. The SP AF70-300mm Di VC USD best-in-class telephoto zoom was released this summer.

The 18-270mm Di II VC PZD is an astonishingly light, compact ultra-high-power zoom lens with a filter diameter of Ø62mm. Weighing in at 15.9oz., this new all-in-one zoom lens is equipped with an AF unit driven by Tamron’s new PZD (Piezo Drive), an ultrasonic motor that delivers faster and quieter focusing when the autofocus is engaged.

The 18-270mm Di II VC PZD is easy to use and highly portable – a high-power zoom that will offer the user the versatility to shoot in a variety of situations. Its wide zoom range of 18-270mm positions the lens as an all-purpose workhorse for any photographic situation.

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, with the added value of Tamron’s proprietary VC (Vibration Compensation) image stabilization. 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. A minimum focusing distance of 19.3 inches throughout the zoom range and a maximum magnification ratio of 1:3.8.

Tamron’s new PZD (Piezo Drive) autofocus technology delivers silent, high-speed autofocus in a compact lens
Ultrasonic motors are divided into two categories depending on the principle that generates the energy to move the drive: traveling wave motors and standing wave motors. Traveling wave motors include the ring-type ultrasonic motor used in the recently launched SP 70-300mm VC USD as well as other lenses, but this lens employs a newer technology, the PZD (Piezo Drive), which functions on the standing wave principle.

A standing wave ultrasonic motor utilizes high-frequency voltage to extend and turn the Piezoelectric (Piezoceramic) element, thus moving the entire element in a standing wave movement. The metal tip is the contact point of the element to the rotor, and moves in an elliptic motion from the swiveling motion of the moving element, and the friction from this motion turns the rotor. Standing wave ultrasonic motors have the distinct advantage of being smaller than their traveling wave counterparts, and therefore allow a more compact SLR lens size.

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.

New VC Mechanism (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.

Notice of Classification Code Change for Nikon Mounts
Since the introduction by Tamron of the first Nikon mount lens featuring a Built-in AF motor (AF28-300mm F/3.5-6.3 XR Di VC Model A20) all Tamron Nikon mount lenses with the Built-in AF motor had a model number designation of “NII.” Lenses using a coupler system without a Built-in AF motor are currently designated as “N.”*5 As future Tamron lens introductions for Nikon mount will have the Built-in AF motor as a standard feature, Tamron has decided to simplify the designation and consolidate all Nikon mount lenses as “N,” eliminating the “NII” designation for future models. This model designation change will be effective with the 18-270mm F/3.5-6.3 Di II VC PZD (Model B008) introduction.

About TAMRON Co.,  Ltd.
‘New Eyes for Industry’ is Tamron’s slogan, as they are a comprehensive manufacturer of a wide range of original optical products, from interchangeable lenses for SLR cameras to various optical devices for both the general consumer and OEMs. Tamron makes optical products that contribute to a range of different industries. As a leading manufacturer of optical devices, Tamron will continue to exercise its rich creativity and leading-edge technical prowess to make advances into various industrial fields.

Optical Product Line-up:
Interchangeable lenses for SLR cameras, digital camera lenses, video camera lenses, CCTV camera lenses, lenses for cell phones cameras, ultra-precision optical components, etc.

Tamron is aware of their environmental responsibilities and aspires to preserve the environment in all business activities.

*1For SLR high-zoom-ratio lenses with 15x magnification capability. Current as of December 2010. (Source: Tamron).
*2 PZD (Piezo Drive) is a standing wave ultrasonic motor system developed by Tamron. The motor is faster and quieter than DC motors when the AF drive is operated, and compared with ring-type ultrasonic motors, it has an actuator that facilitates lens design and reduced size.
*3 Di II (Digitally Integrated Design): Di II lenses provide an optimized optical design for exclusive use with DSLRs with APS-C size sensors. Di II lenses cannot be used with DSLRs with an image sensor larger than APS-C size, or with 35mm film SLR cameras.
*4The Sony mount version is not equipped with the VC mechanism as the bodies of Sony’s DSLRs have a built-in image stabilization function. Consequently, the Sony mount version is referred to as 18-270mm F/3.5-6.3 Di II PZD and does not include the VC designation.
*5Coupler system refers to a system that uses a shaft to harness the AF motor built into the camera body to operate the lens. The “N” classification lenses with coupler systems are: AF 55-200mm F/4-5.6 Di II (Model A15); 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).

Read more @ dpreview

Tamron releases SP 70-300mm F4-5.6 Di VC USD lens for Nikon

Five months after announcing its development, Tamron has said the SP 70-300mm F/4-5.6 Di VC USD zoom lens will be available from the end of this month in Nikon F mount. Priced at $449 and working both on full-frame and APS-C digital SLRs, it is the company’s first lens to feature an Ultrasonic Silent Drive (USD) autofocus motor, giving full-time manual focus override.

An Extra Low Dispersion (XLD)*1 lens made from high-grade materials delivers best-in-class resolution while Tamron’s own Ultrasonic Silent Drive (USD)*2 and Vibration Compensation (VC) make the lens fast, quiet and easy to use

Tamron announced another advance in the company’s pursuit of high resolution images in the telephoto lens category with the release of its anniversary model SP 70-300mm telephoto zoom lens featuring VC (Vibration Compensation) image stabilization and an ultrasonic auto-focus drive –– USD (Ultrasonic Silent Drive). The SP 70-300mm F/4-5.6 Di VC USD (Model A005) high-resolution DSLR telephoto zoom lens is available for the Nikon mount on August 26, 2010, with the launch of mounts for Canon and Sony to follow.

This new lens is designed for digital SLR cameras, and it can be used with both full-frame sensor and AF 35mm cameras with a zoom range of 70-300mm; or with APS-C sensor cameras where the angle of view will change the zoom range equal to 109-465mm.*4

With superior optical performance, Tamron’s own USD (Ultrasonic Silent Drive) and VC (Vibration Compensation), the SP 70-300mm  Di VC USD (Model A005) provides the performance of a high-end premium telephoto zoom that is appealing to a broad spectrum of photography enthusiasts.

In the pursuit to achieve the most outstanding image resolution in the 70-300mm class, Tamron’s Anniversary lens – the SP AF70-300mm Di VC USD (Model A005) – utilizes an advanced optical design that features an LD (Low Dispersion) and an XLD (Extra Low Dispersion) lens element made from specialized materials that prevent chromatic aberration. As a result, the SP AF70-300mm Di VC USD (Model A005) boasts sharper contrast and greater descriptive performance than all others in its class.

In addition, it is the first Tamron lens sporting a USD (Ultrasonic Silent Drive), Tamron’s very own ultrasonic auto-focus drive mechanism. This USD mechanism delivers fast focusing, making it a perfect telephoto zoom choice for photographing sports, racing, or other fast-moving subjects. The lens also boasts Tamron’s proprietary VC (Vibration Compensation) image stabilization to assist in hand-held photography, not only at long focal length ranges where blurring is common, but also under low-lit conditions, dramatically enhancing photographic freedom.

This combination of best in class image resolution, Ultrasonic Silent Drive and Vibration Compensation is a new achievement of Tamron technology, culminating in the production of a premium 70-300mm telephoto zoom lens.

Product Feature

New optical system optimized for digital cameras achieves top resolution in the 70-300mm class with specialized glass elements including an XLD (Extra Low Dispersion) lens
This lens’ advanced optical design employs a sophisticated XLD (Extra Low Dispersion) lens element made from specialized high-grade glass that has lower dispersive properties than standard LD lenses (where refraction causes the dispersion of white light into spectral hues). The dispersive properties of the XLD lens are at a level similar to fluorite, and in combination with LD elements make for an optimal optical design that delivers best in class resolution with advanced axial chromatic and magnification aberration correction – major inhibitors of image quality enhancement. The result is a lens that delivers sharp contrast and better descriptive performance throughout the entire zoom range.

Fast focusing USD (Ultrasonic Silent Drive), the ultrasonic autofocus drive
The lens is equipped with Tamron’s first-ever ultrasonic auto-focus drive USD (Ultrasonic Silent Drive). It achieves faster focusing making this telephoto lens perfect for photography of sports, motor racing, and other fast-moving subjects. With advanced motor technology and newly developed software, Tamron’s USD delivers precise and noiseless focusing at turbo speed.

USD (Ultrasonic Silent Drive)
Tamron’s 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 to produce 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.

Equipped with Tamron’s VC (Vibration Compensation) image stabilization
The SP 70-300mm Di VC USD employs Tamron’s esteemed image stabilization mechanism–VC (Vibration Compensation) seen in both the AF18-270mm Di II VC (Model B003) and SP AF17-50mm F/2.8 XR Di II VC (Model B005). With VC, the photographer has the freedom to shoot at a shutter speed that is an extra four stops slower without having to worry about blurring. This makes capturing handheld, evening, night, and interior shots much easier.

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 camera shake for cleaner, crisper shots.

Full time manual focus at your fingertips
Auto-focus has many benefits but sometimes the photographer needs the control of manual focus. Full time manual offers just that: the crossover from auto-focus to manual focus by simply adjusting the focus ring, allowing the photographer to make adjustments on the fly. This feature helps the lens produce impressive results even in telephoto situations where the depth of field is narrow.

Better balance and consistent length with internal focusing
When focusing, the internal elements of the lens move and the lens’ external size does not change. This offers better balance and easier telephoto shots. Moreover, the barrel is not subject to stray light entering from external helicoids that can negatively affect images. And because the external elements do not move, it makes it easier to utilize polarizing filters and the flower shape hood to control the amount of light that enters the lens.

Enjoyable photography for a wide range of enthusiasts, from those using traditional film cameras, to digital SLRs with full-frame or APS-C size sensors
With a full-frame digital or 35mm SLR, portrait and medium telephoto shots can be achieved on the wider 70mm end of the range and spectacular telephoto shots at the longer 300mm side. When using an APS-C sensor camera, the angle of view changes, giving it the equivalent range of 109-465mm for bold ultra-telephoto shots. And with a maximum magnification ratio 1:4, the lens can be used to explore in the realm of semi-macro photography.

Uncompromising countermeasures to reduce ghosting and flare
Digital photography requires extreme precision, which is why Tamron incorporates new BBAR (Broad-Band Anti Reflection) multilayer coatings that reduce reflection into the lens elements. This ensures excellent performance in all photographic conditions and enhances light transmission on both long and short wavelengths. Also, Tamron applies internal surface coatings on cemented surfaces of lens elements to make images sharper with better color reproduction and balance.

Simple yet beautiful exterior design
Tamron adopted a simple design with a smooth silhouette to ensure that this lens fits well with various SLR cameras. The exquisite textured paint gives a well-crafted finish to the exterior.

Flower-shaped hood with excellent stray light shielding properties–a standard accessory
The flower-shaped hood has been designed specifically to block out damaging light rays and ensures clear, sharp descriptive performance.

*1 XLD-Extra Low Dispersion lens is made from specialized high-grade glass that has lower dispersive properties than standard LD lenses.
*2 USD-Ultrasonic Silent Drive is Tamron’s proprietary ultrasonic motor drive
*3The Sony mount is not equipped with the VC image stabilization mechanism, as anti-shake functionality is included in the body of Sony digital SLR cameras. Consequently, the name of the Sony mounted lens, SP 70-300mm F/4-5.6 Di USD, does not include the VC description.
*4 Tamron’s conversion 1.55x

Read more @ dpreview

Tamron Develops SP 70-300mm F4-5.6 Di VC USD Lens

Tamron has announced the development of a 70-300mm f/4-5.6 zoom lens featuring image stabilization and an ultrasonic auto-focus drive. The SP 70-300mm F4-5.6 Di VC USD is the company’s first lens to feature its latest Ultrasonic Silent Drive (USD) autofocus motor, with full-time manual focus override. The optical design includes an element made from Extra-Low Dispersion (XLD) glass, said to have optical properties similar to fluorite. Designed for both full-frame and APS-C digital SLRs, the lens will be initially available in Nikon mount followed by Canon and Sony versions.

Tamron 60th Anniversary Model
An Extra Low Dispersion (XLD)*1 lens made from high-grade materials delivers best in class resolution. Tamron’s own Ultrasonic Silent Drive (USD)*2 and Vibration Compensation (VC) make the lens fast, quiet and easy to use.

Announcing the development of a full size premium telephoto zoom - the Tamron Superior Performance SP 70-300mm F/4-5.6 Di VC USD (Model A005) for Nikon mount.

President and CEO Morio Ono of optical equipment manufacturer Tamron Co., Ltd., announced another advance in their pursuit of high resolution images in the telephoto lens category with the development of a 70-300mm F/4-5.6 telephoto zoom lens featuring image stabilization––VC (Vibration Compensation) and an ultrasonic auto-focus drive –– USD (Ultrasonic Silent Drive). The SP 70-300mm F4-5.6 Di VC USD (Model A005) high-resolution DSLR telephoto zoom lens has been produced for the Nikon mount, with the development of compatible mounts for Canon and Sony to follow*3.

While this new lens is designed for digital SLR cameras, it can be used with both full-frame sensor and AF 35mm cameras with a zoom range of 70-300mm; or with APS-C sensor cameras where the angle of view will change the zoom range equal to 109-465mm*4.

With superior optical performance, Tamron’s own USD (Ultrasonic Silent Drive) and VC (Vibration Compensation), the SP 70-300mm F4-5.6 Di VC USD (Model A005) provides the performance of a high-end premium telephoto zoom that is appealing to a broad spectrum of photography enthusiasts.

Unparalleled optical performance in a fast and steady telephoto zoom lens
In the pursuit to achieve the most outstanding image resolution in the 70-300mm class, Tamron’s Anniversary lens – the SP AF70-300mm F4-5.6 Di VC USD (Model A005) – utilizes an advanced optical design that features a LD (Low Dispersion) and an XLD (Extra Low Dispersion) lens element made from specialized materials that prevent chromatic aberration. As a result, the SP AF70-300mm F4-5.6 Di VC USD (Model A005) boasts sharper contrast and greater descriptive performance than all others in its class.

In addition, it is the first Tamron lens sporting a USD (Ultrasonic Silent Drive), Tamron’s very own ultrasonic auto-focus drive mechanism. This USD mechanism delivers fast focusing, making it a perfect telephoto zoom choice for photographing sports, racing, or other fast-moving subjects. The lens also boasts Tamron’s proprietary VC (Vibration Compensation) image stabilization to assist in hand-held photography, not only at long focal length ranges where blurring is common, but also under low-lit conditions, dramatically enhancing photographic freedom.

This combination of best in class image resolution, Ultrasonic Silent Drive and Vibration Compensation is a new achievement of Tamron technology, culminating in the production of a premium 70-300mm telephoto zoom lens.

Product Features
New optical system optimized for digital cameras achieves top resolution in the 70-300mm class with specialized glass elements including an XLD (Extra Low Dispersion) lens
This lens’ advanced optical design employs a sophisticated XLD (Extra Low Dispersion) lens element made from specialized high-grade glass that has lower dispersive properties than standard LD lenses (where refraction causes the dispersion of white light into spectral hues). The dispersive properties of the XLD lens are at a level similar to fluorite, and in combination with a LD element make for an optimal optical design that delivers best in class resolution with advanced axial chromatic and magnification aberration correction – major inhibitors of image quality enhancement. The result is a lens that delivers sharp contrast and better descriptive performance throughout the entire zoom range.

Fast focusing USD (Ultrasonic Silent Drive), the ultrasonic autofocus drive
The lens is equipped with Tamron’s first-ever ultrasonic auto-focus drive USD (Ultrasonic Silent Drive). It achieves faster focusing making this telephoto lens perfect for photography of sports, motor racing, and other fast-moving subjects. With advanced motor technology and newly developed software, Tamron’s USD delivers precise and noiseless focusing at turbo speed.

USD (Ultrasonic Silent Drive)
Tamron’s 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.

Equipped with Tamron’s VC (Vibration Compensation) image stabilization
The SP 70-300mm F4-5.6 Di VC USD employs Tamron’s esteemed image stabilization mechanism–VC (Vibration Compensation) seen in both the AF18-270mm Di II VC (Model B003) and SP AF17-50mm F/2.8 XR Di II VC (Model B005). With VC, the photographer has the freedom to shoot at a shutter speed that is an extra four stops slower without having to worry about blurring. This makes capturing handheld, evening, night, and interior shots much easier.

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 camera shake for cleaner, crisper shots.

Full time manual focus at your fingertips
Auto-focus has many benefits but sometimes the photographer needs the control of manual focus. Full time manual offers just that: the crossover from auto-focus to manual focus by simply adjusting the focus ring, allowing the photographer to make adjustments on the fly. This feature helps the lens produce impressive results even in telephoto situations where the depth of field is narrow.

Better balance and consistent length with internal focusing
When focusing, the internal elements of the lens move and the lens’ external size does not change. This offers better balance and easier telephoto shots. Moreover, the barrel is not subject to stray light entering from external helicoids that can negatively affect images. And because the external elements do not move, it makes it easier to utilize polarizing filters and the flower shape hood to control the amount of light that enters the lens.

Enjoyable photography for a wide range of enthusiasts, from those using traditional film cameras, to digital SLRs with full-frame or APS-C size sensors
With a full-frame digital or 35mm SLR, portrait and medium telephoto shots can be achieved on the wider 70mm end of the range and spectacular telephoto shots at the longer 300mm side. When using an ASP-C sensor camera the angle of view changes, giving it the equivalent range of 109-465mm for bold ultra-telephoto shots. And with a maximum magnification ratio 1:4, the lens can be used to explore in the realm of semi-macro photography.

Uncompromising countermeasures to reduce ghosting and flare
Digital photography requires extreme precision, which is why Tamron incorporates new BBAR (Broad-Band Anti Reflection) multilayer coatings that reduce reflection into the lens elements. This ensures excellent performance in all photographic conditions and enhances light transmission on both long and short wavelengths. Also, Tamron applies internal surface coatings on cemented surfaces of lens elements to make images sharper with better color reproduction and balance.

Simple yet beautiful exterior design

Tamron adopted a simple design with a smooth silhouette to ensure that this lens fits well with various SLR cameras. The exquisite textured paint gives a well-crafted finish to the exterior.

Flower-shaped hood with excellent stray light shielding properties–a standard accessory
The flower-shaped hood has been designed specifically to block out damaging light rays and ensures clear, sharp descriptive performance.

*1 XLD-Extra Low Dispersion lens is made from specialized high-grade glass that has lower dispersive properties than standard LD lenses.
*2 USD-Ultrasonic Silent Drive is Tamron’s proprietary ultrasonic motor drive.
*3 The Sony mount is not equipped with the VC image stabilization mechanism, as anti-shake functionality is included in the body of Sony digital SLR cameras. Consequently, the name of the Sony mounted lens, SP 70-300mm F/4-5.6 Di USD, does not include the VC description.
*4 Tamron’s conversion 1.55x

Read more @ dpreview

Tamron Launches Stabilized 17-50mm F2.8 Zoom

tamron17mm50mmTamron has announced a revised version of its popular 17-50mm F2.8 fast standard zoom for APS-C/DX SLRs, which now incorporates optical image stabilization (or as the company calls it, Vibration Compensation). The SP AF 17-50mm F/2.8 XR Di II VC LD Aspherical [IF] offers a useful wide angle to short telephoto range of 26-78mm (35mm equivalent) in a compact design scarcely larger than its unstabilized predecessor. The 19 element / 14 group optical design employs a host of special elements to minimize aberrations, and features a minimum focusing distance of 0.29m over the entire zoom range, with a maximum magnification of 0.21x. It will be available in Nikon mount (with a built-in focusing motor) from mid-September, with a Canon version to follow.

TAMRON LAUNCHES FAST SP AF17-50MM WITH
VIBRATION COMPENSATION FOR NIKON DX-FORMAT DSLRS

September 1, 2009, Saitama, Japan— Tamron Co., Ltd. announced the release of the SP AF17-50mm F/2.8 XR Di II (*1) VC LD Aspherical [IF] (Model B005NII), a high speed f/2.8 wide-to-moderate-telephoto zoom lens designed exclusively for Nikon-mount digital SLR cameras with smaller sensors. Featuring Tamron’s proprietary tri-axial Vibration Compensation (VC) mechanism that minimizes the effects of handheld camera shake, the lens will be available starting on September 17, 2009 in Japan. Tamron plans to introduce the lens in a Canon mount version shortly after the new Nikon mount version with built-in motor hits the market.

The new SP 17-50mm F/2.8 XR Di II VC covers the very popular 17-50mm focal length range (equivalent to 26-78mm in the full-frame 35mm format*2) making it extremely versatile. Its wide aperture and outstanding performance provide practical advantages in low-light shooting and aesthetic image control, thereby enriching the user’s range of creative expression. The new lens delivers impressive sharpness and striking contrast over its entire focal-length and aperture range, and at its maximum aperture of f/2.8 it produces beautiful images enhanced by shallow depth of-field, and smooth, natural transitions in out-of-focus areas of the image (i.e. excellent bokeh.) The new lens is equipped with Tamron’s proprietary Vibration Compensation (VC) image stabilization mechanism, which controls the effects of camera shake in three planes. VC provides more opportunities for sharp hand-held photography at the slow shutter speeds needed when shooting in low-light conditions (e.g. night or indoor scenes) dramatically enhancing the user’s level of photographic freedom.

MISSION ACCOMPLISHED
The previously announced, still currently available Tamron SP 17-50mm F/2.8 XR Di II (Model A16) boasts superlative optical performance for a fast standard zoom lens and has been acclaimed world-wide as a masterpiece of compact optical design. In developing the new Tamron SP 17-50mm F/2.8 XR Di II VC zoom, the primary goal was to maintain this incredible compactness and ease-of-use while simultaneously enhancing its convenience and expanding its performance envelope. As a result of concerted efforts, the engineers were able to incorporate Tamron’s proprietary state-of-the-art Vibration Compensation (VC) image stabilization mechanism into the new lens without materially increasing its size and weight. As a result of this success, the SP 17-50mm F/2.8 XR Di II VC makes sharp hand-held photography possible under a vastly expanded range of photographic situations.

VC (VIBRATION COMPENSATION)

The Tamron Vibration Compensation mechanism employs a three-coil system in which three driving coils move internal optical components within the VC lens electromagnetically, based on signals originating from three steel ball bearings. Since the VC compensating lens elements are held in place solely by contact with these bearings, smooth, virtually frictionless movement is assured, providing the stabilized viewfinder images and excellent tracking performance characteristic of VC lenses. Moreover, since the VC lens elements move parallel to the image plane via electronic control alone, the mechanical structure is simplified, and the lens is more compact.

Features

Tamron’s proprietary VC (Vibration Compensation) image stabilization mechanism
Equipping a fast standard zoom with the advanced VC mechanism enables extended hand-held shooting possibilities along with enhanced versatility. It allows the full range of photographic expression, all the way from maximizing the expressive background-blurring effects by shooting at the maximum aperture of f/2.8, to fixed focus photography at the smallest apertures using extended depth of field.

Compact size with a filter thread of Ø72mm, while delivering both a large F/2.8 diameter and VC
While the size of a lens tends to increase when it’s equipped with an image stabilizer unit, Tamron has kept this lens as compact as possible through improvements to optical, mechanical and VC designs, thus achieving a remarkably compact size with a filter thread of 72mm.
Since the new Tamron 17-50mm VC lens is a large diameter f/2.8 zoom, the optical image stabilization system is also relatively large compared with previous VC lenses. To achieve the same anti-shake effect as the renowned VC mechanism incorporated into Tamron’s high power zoom lenses— models B003 and A20— the engineers had to enhance the VC unit itself, the mechanism that controls the optical image stabilization system. This initially led to an increase in size compared with existing lenses. It was therefore necessary to reduce the size of the VC unit while at the same time increasing its torque of driving power. This could only be achieved by bringing to all of Tamron’s advanced engineering capabilities that had enabled is to produce high-power zoom lenses and light, compact, high-speed standard zooms. After a prolonged program of development entailing exhaustive research and tireless testing, Tamron’s engineers finally achieved their goal, a fast, compact zoom lens with a filter thread of 72mm incorporating both a large f/2.8 maximum aperture and an effective Vibration Compensation mechanism.

This stunning achievement entailed innovations in both manufacturing technology and production engineering, including improvements to the precision, weight, and strength of the lens’ components. The result: The Tamron SP AF17-50mm F/2.8 XR Di II VC, an extraordinarily complex lens to manufacture but a joy to use.

The optical system, optimized for the characteristics of digital cameras, uses special glass for multiple elements, to enhance optical quality while maintaining compactness
With its innovative use of XR (Extra Refractive Index) glass, Tamron has optimized the overall optical power distribution and reduced the size of the lens, while at the same time implementing advanced correction of optical aberrations. In addition, the optimized positioning of three compound aspheric elements has enabled further shortening and compression of the entire optical system while maintaining outstanding imaging performance. Two LD (low dispersion) lens elements are also employed to make effective corrections for axial chromatic aberrations and chromatic aberrations due to magnification, a major factor in enhancing optical quality in digital photography. The result: excellent image performance throughout the zoom range.

  • Optimizing the angle of light rays striking the image sensor
    To reduce the impact of changes in aberrations due to zooming, the optical design adopted for this lens was developed to literally guide the angles of rays of light entering from the center to the periphery of the lens. This ensures that the light rays fall within a set range on the image sensor, enhancing image quality.
  • Reduced fall-off of peripheral brightness
    The fall-off in peripheral brightness that limits resolution in wide-angle shooting is very well controlled, resulting in excellent image detail from the center to the outer edges and corners of the image field.
  • Superior resolution
    The fall-off in peripheral brightness that limits resolution in wide-angle shooting is very well controlled, resulting in excellent image detail from the center to the outer edges and corners of the image field.
  • As an SP Di II class lens, this lens delivers top imaging performance in all key parameters–high resolution, high contrast, and excellent detail rendition.
  • Uncompromising countermeasures to reduce ghosting and flare
    The latest BBAR (Broad-Band Anti-Reflection) multi-layer coatings are used to reduce reflection from the lens, ensuring excellent performance in all photographic conditions. The coatings enhance light transmission in both the short wavelength and long wavelength ranges. In addition, internal surface coatings (coatings on cemented surfaces of lens elements) have been applied to all cemented surfaces, for sharpness, optimum color reproduction performance and excellent color balance.

Minimum focus distance of 11.4″ (0.29m) across the zoom range, with macro capability of 1:4.8
Even with its VC image stabilization optical system this lens delivers a minimum focus distance of 11.4″ over the entire zoom range, enabling stress-free close-up photography. The maximum magnification ratio at 50mm is 1:4.8(*3).

Simple, beautiful exterior design
A simple, classic design with a smooth silhouette has been adopted to ensure that this lens combines well with various SLR cameras. The highest quality textured paint has been used to give a superb finish to the exterior.

Zoom lock mechanism, useful when carrying the lens/camera over your shoulder
The lens includes Tamron’s zoom lock mechanism to prevent the lens barrel from extending by its own weight when lens is being carried on the camera pointing downward.

Flower-shaped hood with excellent stray light shielding properties supplied as standard accessory=
The flower-shaped hood is ideally matched to the frame of the viewfinder screen to effectively block damaging light rays coming in from outside the borders of the image area, ensuring clear, sharp flare-free performance. The hood is provided as a standard accessory

*1 Di II (Digitally integrated design) lenses are designed exclusively for use with digital SLR cameras (equivalent to APS-C size), and employ an optical system optimized for the characteristics of those cameras. Di II lenses are not designed for use with digital SLR cameras with image sensors larger than APS-C size or 35 mm film SLR cameras.

*2 Tamron’s conversion value is 1.55 x

*3 This lens enables photography of virtually the same range as that when using a lens with a maximum magnification ratio of 1:3.1 on a full frame format camera, as APS-C size image sensors are smaller than 35mm film.

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