The SP AF17-50mm F/2.8 is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras, 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 distancesDi 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.
Lightweight, Compact Fast Standard Zoom Lens is Designed Exclusively for Digital SLR Cameras, with 17mm Wide Angle CoverageExclusive 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 DesignThe 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 CapabilityThe 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 SensorThis 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 IlluminationPeripheral 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 ResolutionSince 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 FlareBy 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 DevicesComplicated 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 IncorporatedThe Zoom Lock prevents unwanted barrel extension when carrying the lens/camera combination. Flower-Shaped Lens HoodA 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: Canon AF
(based on 12 reviews)
of respondents would recommend this to a friend.
Reviewed by 12 customers
Displaying reviews 1-10
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Unbeatable for the price.
from Western Colorado
About Me Photo Enthusiast
Comments about Tamron 17-50mm f/2.8 XR Di-II LD Aspherical [IF] SP AF Zoom Lens for Canon EOS Digital:
This lens is sharper than either my 17-40 4.0L or 24-105 4.0L. For indoor or non action photography I prefer this lens over the Canon 4.0L's. The autofocus is accurate and works well but is slow compared to the Canon L Lenses. I didn't mark it down for the slow focus because It didn't bother me until I had several L series lenses. For the cost this lens is unbeatable! If you're on a tight budget this lens is for you.
Bottom Line Yes, I would recommend this to a friend
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Tamron 17-50 2.8
Excellent all around lens extremely sharp even at 2.8 I am very happy so far with the performance on my xti
from Crossville, Tn
About Me Semi-pro Photographer
Poor quaility. does not operate properly
Bottom Line No, I would not recommend this to a friend
from chicago, il
About Me Casual Photographer
Great walk around lens, good quality, nice sharpness especially at f/4. The zoom gives decent range, it's not too heavy, but still has some toughness. But it's a nice cheap alternative to the Canon lens 17-55
from Everett, WA
Pleased So Far
By Photography Bug
I've only had and used the lens for a few weeks now and purchased with another so am not using it exclusively, however so far I am very pleased with it and have taken a number of shots that are truly top-notch in color and clarity. I'm impressed at this point and can update when I have more use w/the lens over time.
First BuyDig purchase, won't be the last
By Amature Photographer
from West Michigan
I ended up with a tack sharp copy, especially stopped down to F4 and am thrilled with the 6 year warranty... Lens sharpness wows me. Low F all the way through the focal length is great. The only con at this point is the autofocus is a little louder than I expected and I don't know if that's normal for this lens.
By Shen the AZN
Love it. Sold my kit lens. Only worry is that I will mess up my night shots without Image Stab (didn't get the one with VC because I heard the image quality is worse)
from Long Island, NY
a good value for the price, non VC needs getting used to, but tack sharp at f4 in good light
Images shared by annieb
flower in daylight
Tags: Made with Product
Sharp fast lens at reasonable price.
from Chicago, IL
Fast zoom lens.Sharp at f2.8.Much cheaper than the Canon model.