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17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor)
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Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor)

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Condition: Brand new, USA Warranty
Built in motor for use on the new Nikon Cameras Includes lens hood, 67mm filter size 2.9 inches in diameter and 3.2 inches long
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$499.00
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NOTE: This new lens has a buit-in motor and as such is perfectly compatible with the D40, D40X and D60 bodies.  

The SP AF17-50mm F/2.8 II (AF016NII)-is a lightweight, compact, fast standard zoom lens designed exclusively for Nikon digital SLR cameras.  It will , expanding the product concept of the popular SP AF28-75mm F/2.8 zoom lens. In addition, portrait shots are made beautiful with the natural out-of-focus effect characteristic provided by the fast F/2.8 aperture. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure. The lens boasts one of the best close-up shooting performances in the class of fast standard zoom lenses designed exclusively for digital cameras and featuring an F/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances

Di II: Lenses are designed for exclusive use on digital cameras with smaller-size imagers and inherit all of the benefits of our Di products. These lenses are not designed for 35mm film cameras and digital cameras with image sensors larger than 24mm x 16mm.

Key Features:

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.)*.
* Values given are for Nikon AF cameras.

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 1:4.5* at the 50mm setting is the top level in its class.
* Since APS-C sized image sensors are smaller than 35mm film, the 17-50mm can fill the frame with almost the same scope as a lens with a Max. Mag. Ratio of 1:3.0 on a 35mm SLR camera.

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.

Specifications:

Model Name: A016
Focal Length: 17-50mm
Maximum Aperture: F/2.8
Angle of View: 78 degrees 45' - 31 degrees 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: Nikon AF-D

Customer Reviews
Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor)

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4 out of 5 stars   17-55mm
By King-tut (Chicago Illinois) April 18, 2013
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Verified Purchaser
Pros: Lightweight
Cons: Doesn't Connect Closely, Tough To Attach, Attaching Isn't Clear
Other Comments: I'm not very fond of how the lens attaches to the camera. First off there's no way of telling what to line up to connect it properly. There seems to be a gap between the lens and the body if the camera. I'm not sure if that's how it should be. I haven't had an problem with the lens otherwise .
I recommend this product Yes, I recommend this product
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5 out of 5 stars   Great Product and Value
By noahjokc (Oklahoma City, OK) January 13, 2012
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Verified Purchaser
Pros: Durable, Fast / accurate auto-focus, Easily Interchangeable, Lightweight, Consistent Output, Nice Bokeh
Cons:
Other Comments: Very fast service. With Buydig you can count on great service.
I recommend this product Yes, I recommend this product
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4 out of 5 stars   Great low light lens for the price
By BlueLizard23 (Mississippi) April 02, 2011
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Verified Purchaser
Pros: Nice Bokeh, Easily Interchangeable, Consistent Output
Cons:
Other Comments: This lens is very nice for indoor and low light use. I can consistently take photos inside without a flash, which I really love. The images are pretty sharp and the auto focus works well even if if isn't quite as fast as the Nikon lens. At a fraction of the price for the equivalent Nikon lens, I think it was well worth the price!
I recommend this product Yes, I recommend this product
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5 out of 5 stars   Great Lens
By FAST Ed (Pittsburgh, PA) December 28, 2010
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Verified Purchaser
Pros: Lightweight, Strong Construction, Fast / accurate auto-focus, Durable, Consistent Output, Easily Interchangeable
Cons:
Other Comments: Excellent lens in a limited distance. I take large objects in a small area.
I recommend this product Yes, I recommend this product
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4 out of 5 stars   Excellent Lens for a Reasonable Price
By hbva (Alexandria, VA) August 04, 2010
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Pros: Durable, Consistent Output, Excellent Color rendition, Fast / accurate auto-focus, Lightweight, Easily Interchangeable, Very Sharp
Cons: No Image Stabilization
Other Comments: I've only had this lens for one day; it is now one of six lenses for my Canon EOS 450D, including the bundled 18-55mm f/3.5 lens, which I hardly ever use. I bought the Tamron 17-50 mm lens to fill the wide-angle gap, and I have tested it only indoors thus far. Frankly, its output compares very favorably to all the Canon-branded lenses I own, including the 50mm f/1.4 lens. Contrary to the experience of the other reviewer on this site, images I took with the Tamron lens at both extremes of the zoom range (17mm and 50mm) are sharp wide-open at f:2.8, and tack-sharp at f/3.5. Colors are deep and accurate ... very natural-looking. The motor is definitely there, and it focuses easily, smoothly and, above all, accurately. The lens has a solid feel and appears to be well-constructed. It attaches to my EOS 450D without difficulty. The only shortcoming I find is that image stabilization, which is not available with this lens, would be useful at very slow speeds. I consciously took all the initial test images indoors, without a tripod or other support, and without flash or artificial illumination at 1/50 sec. If there is any blurring, it is not noticeable to me, even after magnifying the images severalfold on the camera's 3" LCD screen and then viewing them on my 23" computer monitor in Photoshop. However, I would not trust myself to shoot free-hand at anything much slower than 1/50 sec. So, all in all, my first impressions are highly positive. I may update this review after more extensive use ... going to Grand Teton and Yellowstone National Parks later this month, so there will be opportunities galore!
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2 out of 5 stars   Very Disappointed
By John (Idaho) May 07, 2010
Review submitted for Tamron 17-50mm f/2.8 XR Di-II LD [IF] SP AF Zoom Lens for Nikon D40 (Built-in Motor) (TM1750XRDINA2)
Verified Purchaser
Pros: Consistent Output, Strong Construction
Cons: Blurry Focus
Other Comments: First, I did not get the new lens with motor, I was sent an old model without the motor. The problem, however, is that the focus or possibly the quality of the glass was not good. All photos, when enlarged 100%, were extremely blurry, very unlike any photos taken with my Nikon lenses. You get what you pay for!
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