Tamron SP 24-70mm f/2.8 VC Di USD XR

For the english announcement: click here.

Fotografia digitala acceseaza o noua dimensiune. Din Saitama, Japonia, Tamron anunta via F64: dezvoltarea primului obiectiv 24-70 f/2.8 cu stabilizare din lume!

F64 il va avea in exclusivitate pentru piata foto din Romania, la magazin, pentru teste si comercializare.

Plaja focala 24-70mm si diafragma f/2.8 reprezinta zoom-ul standard pentru profesionisti si entuziasti, in special la fotografia de eveniment. Acolo reprezinta nu doar o optiune, ci o necesitate prin armonizarea focalei variabile cu diafragma generoasa. Pentru prima oara intr-un astfel de instrument se adauga mecanismul de stabilizare, permitand captarea imaginilor in conditii de iluminare (sau… intuneric) greu de imaginat pana in prezent.

Cu denumirea sa oficiala: SP 24-70mm F/2.8 Di VC USD -Model A007- obiectivul Tamron, perfect compatibil cu aparatele full-frame va putea fi adaptat pentru trei monturi: Nikon F, Canon EOS si Sony Alpha. Corpul obiectivului Tamron va include un nou sistem de stabilizare, sub denumire originala: New Vibration Control System – Moving Coil Method, si sistemul ultrasonic pentru focalizare.

Obiectivul Tamron 24-70mm este dotat cu motor de focalizare USD rapid si precis, constructie optica cu elemente de calitate inalta, dimensiuni reduse si detalii estetice atent finisate. Compatibil 100% cu aparatele foto full-frame, Tamron 24-70 cu stabilizare de imagine este excelent ca obiectiv all-around iar diafragma luminoasa, f/2.8 il transforma intr-un obiectiv perfect pentru fotografierea in conditii de iluminare slaba si asigura o separare perfecta a subiectului de fundal.
Esentele tehnice ale primului obiectiv cu stabilizare din lume pe plaja focala 24-70mm, produs de compania Tamron sunt: diafragma maxima f/2.8 cu 9 lamele rotunjite, compatibilitatea cu aparatele full-frame, silentiozitate, focus rapid, luminozitate.
Obiectivul Tamron 24-70 are o constructie rezistenta la umezeala ce-l protejeaza in conditii adverse, cum ar fi ploaia si utilizarea in medii cu praf sau umezeala excesiva.
Utilizarea unei diafragme circulare confera fotografiei un splendid efect blur iar forma ronda se pastreaza chiar si in momentul in care se scad doua trepte de diafragma din valoarea sa maxima.
Pretul acestui obiectiv nu a fost confirmat de oficialii Tamron Europe insa, anul trecut la intalnirea si prezentarile Tamron care au avut loc la Oslo, s-a vorbit despre o cotatie de aproximativ 700 euro, un pret extrem de competitiv pentru primul obiectiv cu stabilizare din lume construit pe cea mai ceruta plaja focala a unui obiectiv cu zoom standard pe formatul full-frame.

Inca nu au fost anuntate datele de livrare si pretul final, dar va vom tine la curent!

In continuare va prezentam anuntul original:

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)

February 6th, 2012, Saitama, Japan: 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.

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.

Specifications

Model: A007
Focal length: 24-70mm
Maximum aperture: F/2.8
Angle of view (diagonal): 84°04’ －34°21’ (for full frame 35mm format cameras)
                               60°20’ －22°33’ (for APS-C format cameras)

Lens construction: 17 elements in 12 groups
Minimum focus distance: 0.38m (15.0 in)
Maximum magnification ratio: 1:5 (at f=70mm: MFD 0.38m)
Filter size: φ82mm
Length1: 108.5mm*
Entire Length2: 116.9mm*
Diameter: φ88.2mm
Weight: 825g*
No. of diaphragm blades: 9 (rounded diaphragm)
Minimum aperture: F/22
Standard accessories: Flower-shaped lens hood
Compatible mounts: Canon, Nikon, Sony

*Specifications, appearance, functionality, etc., may be changed without prior notice.
*Length, entire length and weight values given are for the Nikon mount.

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.