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  • Tamron AF 17-50mm f/2.8 XR Di II LD Aspherical Lens (IF) - Canon Mount
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Tamron AF 17-50mm f/2.8 XR Di II LD Aspherical Lens (IF) - Canon Mount

by Tamron
| 39 answered questions

Available from these sellers.
  • Construction: 13 Groups/ 16 Elements Diaphragm: 7 blades
  • Angle of view: 78 at 45' - 31 at 11', (APS-C size equivalent)
  • F stop range: 2.8- 32
  • Closest Focusing Distance: 10.6in. (0.27m)
  • Maximum Magnification: 1:4.5 Maximum Aperature: f/2.8-4

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1 new from $499.99 7 used from $279.85

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Technical Details

Product Description

The Tamron SP AF17-50mm f/2.8 XR Di II LD Aspherical [IF] is a lightweight, compact, fast standard zoom lens designed exclusively for digital SLR cameras. The focal length of this lens is equivalent to approx. 26-78mm in 35mm format. This lens offers an f/2.8 maximum aperture throughout the entire zoom range, to ensure stress-free photographic shots at all focal lengths and distances. Additionally, a broader photographic expression through the use of faster shutter speeds as a result of the maximum aperture offers enhanced photographic pleasure. FEATURES: Optimized for Digital SLR - The use of XR (Extra Refractive Index) glass 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. LD Glass - 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. 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. 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 multiple-layer coating technology on ordinary elements, ghosting and flare due to the reflections that occur when light enters through the front element and

Product Details

  • Product Dimensions: 0.4 x 0.4 x 0.4 inches ; 7 ounces
  • Shipping Weight: 1.5 pounds
  • ASIN: B000EXR0SI
  • Item model number: TAONAF016C700
  • Average Customer Review: 4.3 out of 5 stars  See all reviews (287 customer reviews)
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at May 4, 2006

Read about our customers' top-rated lenses and cameras on our review pages: Lenses, Digital SLR Cameras, Compact System Cameras

Customer Questions & Answers

Customer Reviews

4.3 out of 5 stars

Most Helpful Customer Reviews

243 of 250 people found the following review helpful By Tristan C. on October 8, 2006
Verified Purchase
This is the kind of lens that makes me wish Canon would understand their market better. Instead of putting out a 17-55mm zoom that everyone can afford, they put out a EF-S non pro lens at a pro price, which has serious quality control issues. Tamron, however, responded.

This lens is quite sharp. It could definately be used for professional purposes. Sharp at 2.8 and much sharper above. After using this lens, the 17-40mm L, as well as the new EF-S 17-55mm, I can honestly say that Tamron beat out Canon in their own game in terms of quality for the money. Great optics, great range, affordable, and a SIX YEAR warranty, as opposed to Canon's weak 1 year warranty. Buy me.
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284 of 304 people found the following review helpful By iFingerLock on July 19, 2006
I tested canon 28-105 3.5-4.5, sigma 24-70 2.8, canon 50mm 1.8, canon 18-55 3.5-5.6. I would say this Tamron 17-50 2.8 is my dream lens. I bought canon 28-105 3.5-4.5 for the focal range but was very sad about its softness and returned it. Then I went to sigma. That's a huge, heavy lens and very solid. Based on reviews, it should be very sharp. however, it was not true in my case. No matter how hard I tried, I never got sharp image. I guess I was not lucky enough to have a good copy and returned it in one week. Finally I bought Tamron 17-50mm 2.8. It surprised me from the very first picture. The sharpness is as good as canon 50mm 1.8 prime, the benchmark. Contrast is very good and color too. 7 blade aperture makes very nice blur background. I care so much about sharpness so the lens is my taste. The focusing is very accurate and fast enough, even though not as fast as sigma. Now I never touch canon 18-55 kit lens, the difference is huge. It's true this lens has no IS. But for 17-50mm range, IS is not as useful as for tele lens. The price is excellent considering the top optical quanlity. Now I am feeling I am a pro. :)))

The reasons I choose this lens are:

1. widest angle in the class(most important thing for 1.6X cropping factor sensor camera
2. Very sharp and top quanlity glass
3. light weighted and small and easy to carry
4. 7-blade aperture makes nice background(if you own canon 50mm 1.8 II, you will see its 5-blade aperture makes harsh background)
5. big constant 2.8 aperture through the whole range
6. excellent price
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142 of 156 people found the following review helpful By Raivyn on December 24, 2008
Verified Purchase
Alot of people are choosing between the Tamron 17-50mm and the considerably more expensive Canon 17-55 IS. Canon obviously believes this focal length will appeal to the broadest group of consumers, hence why the 18-55 IS is included with the XSI kit. I personally have both the Canon 17-55IS and the Tamron 17-50 and like them both for very different reasons. There are alot of technical reviews that discuss barrel distortion, vignetting, etc, but my review is focused on how well the lens performs if you're a first time DSLR owner like myself who has barely a clue about photography.

What I like about the Tamron 17-50:
-Very small and lightweight. I have it mounted on my Rebel XT, so it makes for a very compact DSLR with a range great for wide angle shots and portraits of people.
-Images are VERY sharp, pretty comparable to the 17-55IS. I shoot in RAW, so I can't comment on color quality much.
-I like the lens cap; its easier than the Canon lens cap to remove while the hood is on.
-Barrel lock: you can lock the barrel so if the lens is stored facing down, it doesn't extend. My Canon 28-135IS does that, and it is annoying.
-It has a maximum constant aperture of 2.8. It is very difficult to find a zoom lens that is this fast for as price as low as this Tamron (the Tamron 28-75 being the other lens that comes too mind). Definitely, NONE of the fast Canon zoom lenses with a constant aperture are in that price category. I think the closest may be a f/4, of you're looking at consumer grade lenses that have apertures that change with the focal length (i.e. f/3.5-5.6).
-Price: It is less than half the price of the 17-55IS.
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143 of 158 people found the following review helpful By Abdulrahman Aljabri on July 8, 2006
Update: I really think this lens is a godsend to the enthusiast, it performs well and is very light and compact. Carrying this lens for hours compared to the more professional and better built, but heavier, Canon Lenses makes it worthwhile to use especially if you consider the saving you get with this lens.

This lens is probably the most interesting among all the wide angel lenses available to Canon crop DSLR users. It offers the best of everything except for a couple of things here and there. Best of all it's price beats all other lenses in that range. But before I start comparing it to other options here is a basic rating of this lens.

RATING: The lens is well built and surprisingly light and compact. It doesn't have the solid L feel but still has a firm feeling that inspires confidence while shooting. Sharpness is at par with other top quality zooms, so much so that at F8.0 and above it matches many primes. Distortion like chromatic aberration and vignetting are about average. Meaning you would probably have to stop the lens down to 5.6-8.0 to eliminate distortions. Focus is quick and right on though a little noisy. Overall, a very good lens.

RANKING: With all of the above in perspective how does it rank? Compared to Canon's 17-40L 4.0 I think the Tamron come on top. Here is a breakdown of the Tamron strenghts and weaknesses compared to the Canon 17-40L.

1. Faster lens (2.8 vs 4.0). That can make the difference between taking the shot or missing in a low light situation.
2. It has a wider zoom range (10mm at the telephoto end).

1. Flare and chromatic aberration control lags behind the 17-40L.
2. solid build but not as solid as the tank-like 17-40L. Some may find that slightly objectionable after using any L lens for many years.
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