- 28-70mm mid-range zoom lens with f/2.8 maximum aperture for Nikon digital SLR cameras.
- Molded-glass aspherical lens for minimized distortion, higher resolution, and superior contrast.
- M/A switch for quick transitions from AF to manual; 2.3-foot minimum focusing distance.
- 9-blade rounded diaphragm opening makes out-of-focus elements appear more natural.
- Measures 3.5 inches in diameter and 4.9 inches long; weighs 33 ounces; 5-year warranty.
Product Description
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Nikon 28-70mm f/2.8D ED-IF AF-S Zoom Nikkor Lens for Nikon
Digital SLR Cameras
From the Manufacturer
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Lens-making is an art--Nikon artisans craft Nikkor optics from
the finest materials, taking pride in adding their intellect and
technique to bring the world's finest lenses to life. They push
the leading edge of lens-making in their effort to provide the
"glass" that makes the world's greatest pictures.
AF Nikkor lenses work with Nikon SLRs for optimal performance,
even the very latest. The Nikon 28-70mm f2.8D ED-IF Autofocus
Zoom Nikkor Lens is a wide to telephoto 2.5x zoom lens ideal for
architecture and portraiture. The ED glass element reduces
chromatic aberrations providing superior optical
performance--even at maximum aperture. There is no power drain
when manually focusing for optimum battery use. The molded-glass
aspherical lens minimizes distortion for higher resolution and
superior contrast. The lens holds a fast and constant f2.8
maximum aperture through the entire focal range, while the M/A
mode provides quick sw between autofocus and manual focus
operation. The nine-blade rounded diaphragm opening makes
out-of-focus elements appear more natural.
ED glass: An essential element of Nikkor telephoto lenses
Nikon developed ED (Extra-low Dispersion) glass to enable the
production of lenses that offer superior sharpness and color
correction by minimizing chromatic aberration. Put simply,
chromatic aberration is a type of image and color dispersion that
occurs when light rays of varying wavelengths pass through
optical glass. In the past, correcting this problem for telephoto
lenses required special optical elements that offer anomalous
dispersion characteristics--specifically calcium fluoride
crystals. However, fluorite easily cracks and is sensitive to
temperature changes that can adversely affect focusing by
altering the lens' refractive index. So Nikon designers and
engineers put their heads together and came up with ED glass,
which offers all the benefits and none of the drawbacks of
calcium fluorite-based glass. With this innovation, Nikon
developed several types of ED glass suitable for various lenses.
They deliver stunning sharpness and contrast even at their
largest apertures. In this way, Nikkor's ED-series lenses
exemplify Nikon's preeminence in lens innovation and performance.
Nikon Super Integrated Coating ensures exceptional performance
To enhance the performance of its optical lens elements, Nikon
employs an exclusive multilayer lens coating that helps reduce
ghost and flare to a negligible level. Nikon Super Integrated
Coating achieves a number of objectives, including minimized
reflection in the wider wavelength range and superior color
balance and reproduction. Nikon Super Integrated Coating is
especially effective for lenses with a large number of elements,
like our Zoom-Nikkors. Also, Nikon's multilayer coating process
is tailored to the design of each particular lens. The number of
coatings applied to each lens element is carefully calculated to
match the lens type and glass used, and also to assure the
uniform color balance that characterizes Nikkor lenses. This
results in lenses that meet much higher standards than the rest
of the industry.
Aspherical lens elements
Nikon introduced the first photographic lens with aspherical
lens elements in 1968. What sets them apart? Aspherical lenses
virtually eliminate the problem of coma and other types of lens
aberration--even when used at the widest aperture. They are
particularly useful in correcting the distortion in wide-angle
lenses. In addition, use of aspherical lenses contributes to a
lighter and smaller lens design. Nikon employs three types of
aspherical lens elements. Precision-ground aspherical lens
elements are the finest expression of lens-crafting art,
demanding extremely rigorous production standards. Hybrid lenses
are made of a special plastic molded onto optical glass. Molded
glass aspherical lenses are manufactured by molding a unique type
of optical glass using a special metal die technique.
Internal Focusing
Imagine being able to focus a lens without it changing in size.
Nikon's IF technology enables just that. All internal optical
movement is limited to the interior of the non-extending lens
barrel. This allows for a more compact, lightweight construction
as well as a closer focusing distance. In addition, a smaller and
lighter focusing lens group is employed to ensure faster
focusing. The IF system is featured in most Nikkor telephoto and
selected Nikkor zoom lenses.
Distance information
D-type and G-type Nikkors relay subject-to-camera distance
information to AF Nikon camera bodies. This then makes possible
advances like 3D Matrix Metering and 3D Multi-Sensor Balanced
Fill-Flash. Note: D-type and G-type Nikkors provide distance
information to the following cameras: Auto exposure; F6, F5,
F100, F90X, F80, F75, F70, F65, F60, F55, F50, Pronea S, Pronea
600i, D2 series, D1 series, D100 and D70s/D70. Flash control; F6,
F5, F100, F90X, F80, F75, F70, D2 series, D1 series, D100 and
D70s/D70.
Silent Wave Motor
Nikon's AF-S technology is yet another reason professional
photographers like Nikkor telephoto lenses. AF-S Nikkors feature
Nikon's SWM which converts "traveling waves" into rotational
energy to focus the optics. This enables high-speed autofocusing
that's extremely accurate and super quiet.
M/A mode
AF-S Nikkors feature Nikon's exclusive M/A mode, that allows
sw from autofocus to manual operation with virtually no
time lag--even during AF servo operation and regardless of AF
mode in use.
What's in the Box:
Lens, 77mm snap-on front lens cap, rear lens cap LF-1, Flexible
lens pouch CL-74, bayonet hood HB-19.