Nikon 17-55mm f/2.8G ED-IF AF-S DX Nikkor Zoom Lens

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Lens-making is surely an art--Nikon artisans craft Nikkor optics through the finest materials, taking pride in adding their intellect and technique to bring the world's finest lenses to life. They push the key fringe of lens-making within their effort to provide the "glass" that helps make the world's greatest pictures.

The Nikon 17-55mm f2.8G ED-IF AF-S DX may be the world's first constant f2.8 3.2x contact developed exclusively to be used with Nikon DX Format. The 3.2x zoom covers from your wide angle of 79 degrees with a narrow angle of 28 degrees 50 minutes (equivalent to 25.5mm to 85.5mm for 35mm format) and is well suited for architecture, landscape, groups shots and portraits. DX design enables a mix of wider angle-of-view with optical characteristics which can be optimized for Nikon digital SLR camera sensors. Nikon DX design creates a smaller image circle (the size from the image that's projected with the lens on to the sensor) enabling smaller lens diameter, lighter weight, and optimal image quality from center-to edge-to-corner for the image.

Three Extra-Low Dispersion (ED) glass elements minimize chromatic aberration and supply higher resolution and superior contrast. Three aspherical lens elements minimize distortion in a lightweight and compact design similar to 17-35mm f2.8 lens. The exclusive Silent Wave Motor enables ultra-high-speed autofocusing with exceptional accuracy and powerful super-quiet operation. [M/A] and [M] modes allow rapid switching between AF and MF operation. Internal Focusing design for smoother focusing and great body balance. Nikon D-type design provides precise distance information for flash and ambient light exposure processes. The rounded diaphragm makes out-of-focus elements appear more natural. The G Type DX Nikkor is designed exclusively to use with Nikon Digital SLR models.

ED glass: An essential component of Nikkor telephoto lenses
Nikon developed ED (Extra-low Dispersion) glass to let the manufacture of lenses offering superior sharpness and color correction by minimizing chromatic aberration. Put simply, chromatic aberration is a form of image and color dispersion that develops when light rays of varying wavelengths pass through optical glass. In the past, correcting this challenge for telephoto lenses required special optical elements that provide anomalous dispersion characteristics--specifically calcium fluoride crystals. However, fluorite easily cracks and it is understanding of temperature changes that can adversely affect focusing by altering the lens' refractive index. So Nikon designers and engineers put their heads together and invented ED glass, that offers every one of the benefits and none in the drawbacks of calcium fluorite-based glass. With this innovation, Nikon developed several types of ED glass suitable for assorted 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 the company's optical lens elements, Nikon employs an exclusive multilayer lens coating that can help reduce ghost and flare with a negligible level. Nikon Super Integrated Coating achieves a variety of objectives, including minimized reflection within the wider wavelength range and superior color balance and reproduction. Nikon Super Integrated Coating is particularly effective for lenses using a large amount of elements, like our Zoom-Nikkors. Also, Nikon's multilayer coating process is tailored for the design of each and every particular lens. The amount of coatings applied to every one lens element is carefully calculated to complement the lens type and glass used, as well as to make sure the uniform color balance that characterizes Nikkor lenses. This brings about lenses that meet greater standards than the remaining 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 issue of coma as well as other forms of lens aberration--even when used in the widest aperture. They are particularly valuable in correcting the distortion in wide-angle lenses. In addition, utilization of aspherical lenses contributes to your lighter and smaller lens design. Nikon employs three kinds of aspherical lens elements. Precision-ground aspherical lens elements will be the finest expression of lens-crafting art, demanding extremely rigorous production standards. Hybrid lenses are created of the special plastic molded onto optical glass. Molded glass aspherical lenses are manufactured by molding a distinctive form of optical glass employing 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 on the interior in the non-extending lens barrel. This allows for any more compact, lightweight construction too as a closer focusing distance. In addition, a smaller and lighter focusing lens group is employed to make certain faster focusing. The IF product is featured generally 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 for 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.

G-type Nikkor lens
The G-type Nikkor does not have any aperture ring; aperture should be selected from camera body.

Silent Wave Motor
Nikon's AF-S technology is one more 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 switching from autofocus to manual operation with virtually almost no time lag--even during AF servo operation and regardless of AF mode in use.

DX Nikkor
Compact and light-weight DX Nikkor lenses featuring an inferior image circle were created and optimized for Nikon D2-series, D1-series, D100, and D70s/D70 digital SLR cameras. These are ideal options for landscape photographers and others who should shoot expansive scenes with Nikon DX-Format digital SLRs. Note: We do not recommend use of DX Nikkor with 35mm (135) or IX240 format cameras.

What's within the Box:
Lens, 77mm snap-on front lens cap LC-77, rear lens cap LF-1, flexible lens pouch CL-1120, bayonet hood HB-31.

L1)NIKON 17-55MM F2.8G IF-ED (2147)



Constant f2.8 3.2x zoom lens developed exclusively for use with Nikon DX Format, optimized for Nikon digital SLRs
Dust and waterproof rubber sealing mount
High optical performance by aspherical lenses and ED glass elements
Silent Wave Motor enables ultra-high-speed autofocusing with exceptional accuracy and powerful super-quiet operation
M/A mode for quick switching between autofocus and manual operation