TAMRON ANNOUNCES THE LAUNCH OF SP AF70-200MM F/2.8 Di LD (IF) MACRO
A Lightweight, High-Performance and Fast Tele-Zoom Realizing 37.4” (0.95m) MFD Over The Entire Zoom Range
PMA, January 31, 2008, Las Vegas, NV— Mr. Morio Ono, President of Tamron Co., Ltd., has announced the launch of SP AF70-200mm F/2.8 Di LD (IF) MACRO, a lightweight, high-performance and fast tele-zoom lens designed for DSLR cameras with 35mm full-size image sensors. The Canon mount is scheduled for spring delivery. The shipment schedule for Nikon, Pentax and Sony will be announced at a later date.
The new SP AF70-200mm Di LD (IF) MACRO (Model A001) is an F/2.8 fast tele-zoom designed for DSLRs with 35mm full-size image sensors, inheriting product concept of the existing SP AF28-75mm F/2.8 XR Di (Model A09) that is highly acclaimed as a compact and fast standard zoom lens enabling photographers to enjoy high cost performance characteristics.
While dimensional increases are confined to the absolute minimum, the new SP AF70-200mm F/2.8 Di LD (IF) MACRO zoom lens offers the best-in-class MFD (minimum focusing distance) of 37.4” (0.95m) over the entire zoom range for the maximum macro magnification ratio of 1:3.1 at f=200mm focal length, for stress-free photography, combined with the advantage of an internal focusing (IF) system.
It enables the user to cover a focal length range of 70mm medium telephoto to 200mm telephoto when mounted on a 35mm full-size DSLR camera and a focal length range from 109mm to 310mm equivalent* ultra telephoto (35mm equivalent, in an angle of view of 7° 59’) when mounted on a DSLR camera equipped with an APS-C sized image sensor.
(*) Tamron’s conversion ratio is 1.55x
37.4” (0.95m) MFD over the Entire Zoom Range for 1:3.1 Maximum Magnification Ratio
This zoom lens, designed for use with full-size format SLR cameras, boasts a fast maximum aperture of F/2.8, yet it allows close-focusing down to 37.4” (0.95m) over the entire zoom range. The maximum magnification ratio is 1:3.1 at the 200mm tele-end. The filter diameter is confined to Ø77mm as a result of the use of an advanced optical design pursuing optimum optical power distribution.
Soft Out-of-Focus Effect and Sharp Depiction
In order to realize soft out-of-focus effect and sharp depiction performance at the same time, the zoom lens uses three LD (low dispersion) elements. As a result, the optical system effectively compensates for lateral and on-axis chromatic aberrations that are major image-degrading factors in telephoto photography, in order to provide edge-to-edge sharpness and high-contrast image quality with flat-field characteristics over the entire zoom range in various photographic situations.
Lightweight, Yet Fast F/2.8 Maximum Aperture
The lens features a fast maximum aperture of F/2.8, yet it weighs a mere 39.2oz. (1,112.6 grams), since it uses barrel parts made of engineering plastic materials having excellent dimensional stability and sufficient strength for professional use and even industrial applications.
Internal Surface Coatings Minimize Ghosting and Flare
Through the use of “Internal Surface Coatings (i.e., multiple-layer coatings on cemented surfaces of plural elements) and multiple-layer coatings to prevent reflections from lens surfaces, ghosting and flare due to reflections that occur when light enters through the front element as well as reflections caused by the imager itself in the mirror box are reduced to the absolute minimum.
One-touch AF/MF Switchover Mechanisms (for Canon and Nikon only)
The models for Nikon and Canon cameras are equipped with AF/MF switchover mechanisms to allow one-touch switchover from AF mode to MF mode or vice versa electronically and mechanically by simply sliding the button (Sony and Pentax systems require AF/MF switchover operation on both the camera and lens). Since the lens uses an IF (internal focusing) system, the focusing ring does not rotate during focusing, which ensures good holding balance at all times. In the MF mode, focusing is performed as easily and comfortably as with an MF lens. Since the overall length of the lens does not change due to zooming or focusing, it offers excellent operability and holding balance
Detachable Tripod Grip Ring
The lens is supplied with a lightweight and rigid aluminum removable tripod socket.
Flower-shaped Lens Hood
A flower-shaped lens hood is included as a standard accessory. The special hood provides optimum shading of superfluous light rays that enter from the rectangular frame outside the image field.
[tags]tamron, SP, AF, 70-200MM, F/2.8, Di LD, (IF), MACRO, lens[/tags]