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 for a 1:3.1 maximum magnification ratio. The filter diameter is confined to Ψ77mm 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 all 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 are reduced to the absolute minimum.
One-touch Focus Ring Switchover Mechanism for AF/MF Switchover (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 tripod grip ring that can be mounted or detached in a one-touch action.
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.
|Angle of View
||34°3' ~ 12°3'
||18 elements /13 groups
|Minimum Focus Distance
||37.4 in. (0.95m) throughout the range
|Maximum Magnification Ratio
||1:3.1 (at f=200mm, MFD=0.95m)
||7.65 in (194.3mm)*
||Ψ3.52 in. (Ψ89.5mm)
||39.25 oz. (1112.6g)*
(without tripod holder)
||Flower-shaped lens hood
||Canon, Nikon, Pentax, Sony
|*Values given are for Nikon AF-D cameras; the cosmetic design and specs are subject to change without notice.