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Objetivos > Objetivos SLR

17-50mm f/2.8 XR Di II LD ASP Nikon
  • 17-50mm f/2.8 XR Di II LD ASP Nikon_sm

17-50mm f/2.8 XR Di II LD ASP Nikon
Angular Zoom Montura Nikon F

Garantía de 5 años

377,02 € IVA incluido      Añadir al carrito

OBSERVACIONES Introducing a fast new lens that expands upon the product concept of the popular SP AF28-75mm F/2.8 XR Di zoom featuring a 17mm focal length to offer a wider angle of view than ordinary standard zoom lenses. This 17mm-50mm standard zoom, designed exclusively for digital SLR cameras with smaller-size imagers (24 x 16mm or smaller), is extremely lightweight and compact for its speed. With a fast F/2.8 throughout the range, it delivers faster shutter speeds and a natural soft-focus effect that makes your photography even more sophisticated. Give your camera what it´s been waiting for, and realize your creative potential.
Tamron´s SP AF17-50mm offers a wider angle than the standard 18mm zoom lenses ordinarily used with digital cameras. With a wider-angle focal length of 17mm (26mm equivalent), this lens is unbeatable for indoor photography, and for capturing full length people shots or an entire building into the shot. The lens is also top-level in its class for minimum focus distance at 27cm (10.6") across the entire zoom range, making it easier than ever to enjoy the creative combination of wide-angle and macro photography.
Constructed with cutting-edge Tamron elements?Three elements of XR (Extra Refractive Index) glass, two Hybrid Aspherical lens elements, and one element of LD glass?this elegant piece of technology inherits Tamron´s tradition of premium image quality and compact size. By incorporating Tamron´s SP (Super Performance) and Di-II (designed exclusively for digital cameras) specifications, along with special internal surface coatings to eliminate ghosting and flare, you´re ensured to get the superior performance you need from your digital camera.
CARACTERÍSTICAS GENERALES - 17-50mm F/2.8 XR Di II LD Aspherical [IF] (Model A16N II) for Nikon with Built-In Motor
Lightweight, Compact Fast Standard Zoom Lens is Designed Exclusively for Digital SLR Cameras, with 17mm Wide Angle Coverage
Exclusive design for digital SLR cameras achieves a fast standard zoom lens that covers virtually the same angles as focal lengths of 26-78mm when converted to a 35mm format. The wide-angle focal length is established at 17mm (26mm equivalent) to obtain a wider angle of view than ordinary standard zoom lenses, while maintaining the remarkably lightweight and compact size of the earlier full frame zoom lens model. Since the lens is designed exclusively for APS-C sized digital cameras, the image circle diameter has been reduced. Moreover, careful adjustments to the design have achieved a lightweight, compact body with a filter diameter of 67mm, overall length of 81.7mm (3.2"), and weight of 434g (15.3oz.)
Optical System Uses Special Glass, and Is Optimized for Digital SLR Characteristics to Enhance Optical Quality in a Compact Design The use of XR (Extra Refractive Index) glass in an innovative way optimizes the overall distribution of optical power, and also reduces various aberrations to the absolute minimum while achieving remarkable compactness. In addition, suitable positioning of two hybrid aspherical elements serves to maintain imaging performance and to shorten and compress the entire optical system. Furthermore, an LD (Low Dispersion) glass element is used to accomplish effective compensation of on-axis and lateral chromatic aberrations, a critical factor for enhancing optical quality in digital photography, in order to achieve outstanding optical performance over the entire zoom range. Minimum Focus Distance of 27cm (10.6") over the Entire Zoom Range Affords a 1:4.5 Macro Capability
The new lens achieves a minimum focus distance of 27cm (10.6") over the entire zoom range, one of the best in its class among fast standard zoom lenses with an F/2.8 maximum aperture throughout the entire zoom range used exclusively for digital SLR cameras with APS-C sized image sensors. The maximum magnification ratio of 1:4.51 at the 50mm setting is the top level in its class.
Optical Design Dedicated to Digital SLR Photography by Optimizing the Angle of Incidence of Light Rays Reaching the Image Sensor This zoom lens uses an optical system designed to confine the changing angles of incidences of light rays reaching the imager within a certain scope over the entire image field by considering the effects of variance due to zooming.
Enhanced Peripheral Illumination Peripheral light fall-off is minimized when compared with that of conventional lenses for film cameras, so images are uniformly bright from the center to the periphery.
Outstanding Resolution
Since the lens is designed exclusively for digital SLR photography, it provides high image quality resolution, contrast and flatness of image field.
Internal Surface Coating to Reduce Ghosting and Flare By employing "Internal Surface Coatings" (i.e., multiple-layer coatings on cemented surfaces of plural elements) and new multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and reflections caused by the imagers themselves are reduced to the absolute minimum. Large Aperture in Lightweight, Compact Design Thanks to New Mechanical Devices Complicated mechanisms are built into the compact body, thanks to new mechanical devices, for excellent portability and ease of use. In addition, a complex triple cam structure where cams zoom and focus within a three-layer lens barrel has been further developed to improve AF focus precision for close-in shots and torque irregularity when zooming in and out. Additionally, the engineering of the lens has been completely overhauled to downsize its parts and to increase their precision and durability, in order to accommodate the complex structure incorporated into the new SP AF17-50mm F/2.8 XR Di-II LD Aspherical [IF]. Zoom Lock Mechanism Incorporated The Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination. Flower-Shaped Lens Hood A glare-reducing 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.
New External Design of the New Di II Series Conveys "High Performance, High Precision Image" Improvements have been made to the external design by adding a gold-colored band between the focus and zoom rings to enhance the appearance and make the product stand out as a Di-II lens. Also, the black coating over the entire lens barrel creates a high-quality, sophisticated look. The rubber patterns of the zoom rings have also been improved to complement the digital camera design style and to provide better handling.
CARACTERÍSTICAS TÉCNICAS Model Name 17-50mm F/2.8 XR Di II LD Aspherical [IF] (Model A16N II) for Nikon with Built-In Motor
Focal Length 17-50mm
Maximum Aperture F/2.8
Angle of View 78° 45´ - 31° 11´ (APS-C size equivalent)
Lens Construction 16 elements in 13 groups
Minimum Focus Distance 0.27m (10.6") (Over the entire zoom range)
Maximum Mag. Ratio 1:4.5 (at f=50mm MFD 0.27m)
Filter Diameter 67mm
Overall Length 81.7mm (3.2")
Maximum Diameter 74.0mm (2.9")
Weight 434 grams (15.3oz.)
Diaphragm Blades 7 blades (Circular apertures)
Minimum Aperture F/32
Standard Accessory Flower-shaped Lens Hood
Compatible Mount Canon AF, Konica Minolta AF-D, Nikon AF-D

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