Product Description

17-50mm f/2.8 Di II LD Aspherical (IF) Tamron zoom lens (A16E) * 35mm equivalent focal length of 26-78mm * compatible only with Canon digital SLR cameras with APS-C (24mm x 16mm or smaller) image sensors -- not compatible with the Canon EOS 5D or EOS 5D MkII full-frame sensor models * advanced optical design with low-dispersion, hybrid aspherical, and extra refractive index glass elements for superior image quality * internal focusing design maintains constant lens length for better balance and easier operation * special internal surface coatings to eliminate ghosting and flare * minimum focus distance: 10.6 inches (throughout zoom range) * diaphragm blades: 7 * attachment/filter size: 67mm *

Product Details

• Brand: Tamron
• Model: AF016C-700
• Released on: 2006-03-08
• Dimensions: 4.10" h x 4.10" w x 5.30" l, 1.25 pounds

Features

• 17-50mm aspherical zoom lens with f/2.8 maximum aperture for Canon DSLR cameras
• Delivers fast shutter speeds and natural soft-focus effect to produce sophisticated results
• 3 elements of XR glass, 2 hybrid aspherical lens elements, and 1 element of LD glass
• Minimum focus distance of 10.6 inches; internal coatings eliminate ghosting and flare
• Measures 2.9 inches in diameter and 3.3 inches long; weighs 15.2 ounces; 6-year warranty

Amazon.com Product Description
The Tamron AF 17-50mm aspherical lens expands on the popularity of the AF 28-75mm f/2.8 XR Di zoom, with a 17mm focal length that offers a wider angle of view than an ordinary standard zoom lens. Designed exclusively for digital SLR cameras with smaller-size imagers (24 x 16mm or smaller), the 17-50mm standard zoom is extremely lightweight and compact for its speed. And with a fast f/2.8 maximum aperture throughout the range, it delivers fast shutter speeds and a natural soft-focus effect that makes your photography even more sophisticated than usual.

Superior image quality
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 guaranteed to get the superior performance you need from your digital camera.

Broadening your horizons
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. The lens is also top-level in its class for minimum focus distance at 27cm (10.6 inches) across the entire zoom range, making it easier than ever to enjoy the creative combination of wide-angle and macro photography.

• Focal length: 17-50mm
• Maximum aperture: f/2.8
• Angle of view (diagonal): 78 degrees (at 45 feet) to 31 degrees (11 feet)
• Lens construction: 16 elements in 13 groups
• Minimum focus distance: 10.6 inches
• Maximum mag ratio: 1:4.5
• Filter size: 67mm
• Diaphragm blades: 7
• Minimum aperture: f/32
• Standard accessory: Flower-shaped hood
• Compatible mount: Canon AF, Konica Minolta AF-D, and Nikon AF-D
• Dimensions: 2.9 inches in diameter and 3.3 inches long
• Weight:15.2 ounces

Customer Reviews

Awesome lens!
This is a great lens! This is the second copy I now own. Having the fixed aperture allows this lens to focus in low light situations. My wife and I photograph weddings and this is our primary lens that covers most situations using Canon 40D and 50D cameras.

Best lens, under $500 for Canon DLSR
I really wanted the Canon 17-55 USM IS f/2.8 lens. But that lens costs $1000. So, after a lot of research decided on this lens. It is a great lens for the price. I would strongly recommend it. It gives sharp images, and also, f/2.8 is great. The major difference between this and the Canon 17-55: The Canon has faster focus, and Image Stablization. Also, perhaps build-quality is possibly better, but the Tamron feels pretty solid.

If you can spend $1000 and have no other budget issues, get the Canon. Otherwise get the Tamron for $400ish, get a 430EX, and Canon 55-250 IS (or 70-300 IS). And you are good to go.

Excellent value, sharp as a tack, but had to return the 1st copy
I had to return the first copy of this lens (not from Amazon) due to obvious softness in the top left of the image. I mean really bad, not just 'hmmm...not quite as sharp as the rest of the image'.
However, the second copy is stunning, incredibly sharp and contrasty, with minimal to no CA. When I returned the first one to the store, I almost went for the Canon version at twice the price, but decided to give the Tamron one more try based on my previous experience with their lenses, the latest being the excellent 28-75 f2.8. I'm glad I stayed with the Tamron, as this copy leaves nothing to be desired and about 500.00 in my pocket. I have IS on my longer lenses (Canon 70-200L is one), but don't need it at this focal length and lens weight. I highly recommend this lens (just be sure you get a good copy).