Tamron SP AF17-50mm F/2.8 Di II LD Aspherical (IF) Lens

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Key Features

  • 17-50mm focal length
  • 25.5-75mm equivalent focal length on APS-C cameras, 27.2-80mm equivalent focal length on Canon APS-C cameras
  • F2.8 constant maximum aperture; F32 minimum
  • Micromotor-type AF motor without full-time manual focusing
  • 67mm filters
  • 0.27m/10.63" minimum focus
  • Available in Canon EF, Pentax KAF, Sony Alpha, Nikon F (DX) mounts

Product Description

The Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF) is a good value fast standard zoom lens for APS-C cameras, offering a constant aperture of F2.8 and covering an effective focal length range of 26-75mm. Optical construction comprises 16 elements in 13 groups, and at its minimum focus distance the 17-50mm gives a maximum reproduction ratio of 1:4.5 - not 'true' macro, but usefully close nonetheless. Tamron also makes a newer image-stabilised version of this lens for Canon and Nikon cameras.


Principal specifications
Lens type Zoom lens
Max Format size APS-C / DX
Focal length 17–50 mm
Image stabilisation No
Lens mount Canon EF, Pentax KAF, Sony/Minolta Alpha, Nikon F (DX)
Maximum aperture F2.8
Minimum aperture F32.0
Aperture ring No
Number of diaphragm blades 7
Aperture notes circular aperture
Elements 16
Groups 13
Special elements / coatings 2 hybrid aspherical elements 1 LD (Low Dispersion) glass element 1 XR (Extra Refractive) element
Minimum focus 0.27 m (10.63)
Maximum magnification 0.22×
Autofocus Yes
Motor type Micromotor
Full time manual Unknown
Focus method Internal
Distance scale Yes
DoF scale Yes
Weight 430 g (0.95 lb)
Diameter 74 mm (2.91)
Length 82 mm (3.22)
Colour Black
Zoom method Rotary (extending)
Zoom lock Yes
Filter thread 67 mm
Hood supplied Yes
Hood product code flower shaped hood
Tripod collar No


User Reviews

3.71429 out of 5 stars
  • Meowr, Jan 27, 2013 GMT:
    Excellent Bang for Buck

    When I bought this lense, I was still considering buying other lenses to compliment it, but soon realised that short of buying exotic primes or ultra-wide angle lenses, this lense covered almost all my photography needs.It is a very good alternative to the 17-55 lenses in Nikon and Canon's repertoire at about a third of the price, and it produces stunning results for the price. It's very sharp across the frame when stopped down to about f/5.6 but even at f2.8 it produces very sharp images in ...

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  • Doru Motoru, Nov 5, 2012 GMT:
    Great lenses

    I say this is the sharpest zoom, and probably the sharpest LENS I have ever tested, at least when at f4 or lower. Contrast and bokeh are nice too, even at 2.8, it fits perfect with K-5, autofocus works fine and quite fast and, yes, it's noisy, but no one died so far because of this. One more thing...it costs about 40% of Sigma 17-50mm, f/2.8 Problems: Plastic body looks cheap...

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  • Sergeg, Sep 17, 2012 GMT:
    Tamron SP AF 17-50mm F/2.8 XR Di II LD Aspherical (IF)

    This is a solid performer with good contrast and color rendition, resolution is impressive wide open and by f4 is outstanding. Focus speed and noise are more than acceptable. The most impressive characteristic I noticed straight away, is the superb control of flare, or almost totally absent at wider apertures when shooting into the sun. This is quite exceptional compared to any lenses I have used and very desirable for landscape work. Problems: I don't know if it is just my copy, but I have ...

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  • DAVID MANZE, Sep 4, 2012 GMT:
    Great Optically FF at apertures F5.6 or above at under 3 mtrs

    Great Optically Problems: Quirky AF problem under 3 mtrs at F5.6 or above

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Tamron USA, Inc. Six-Year Limited Warranty (Six-Year Limited Warranty Valid in USA Only)

Only Tamron lenses imported officially by Tamron USA, Inc. and distributed by authorized Tamron USA, Inc. dealers carry a Six-Year Limited USA warranty.
DPReview GearShop is an authorized Tamron dealer in the United States.

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