Canon EF-S 17-55mm f2.8 IS USM

Regular Price: $1,179.00

$1,039.00

*****
With a large circular aperture, and UD and aspherical elements, the Canon EF-S 17-55mm f2.8 IS USM delivers impressive image quality throughout the entire zoom range.

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The large circular aperture produces a shallow depth-of-field, creating background blur that draws attention to the photographic subject. The lens construction includes UD and aspherical elements, which deliver impressive image quality throughout the entire zoom range. Image Stabilizer lens groups shift to compensate for camera movement so that the image appears steady on the image plane, ensuring clear, crisp images, even in dim light. With a Ring-type USM, inner focusing and new AF algorithms, this lens achieves autofocus quickly and quietly, and with full-time mechanical manual focusing, manually adjusting the focus is possible even in AF mode.

  • Focal Length
    17-55mm
  • Lens Construction
    19 elements in 12 groups
  • Maximum Aperture
    f2.8
  • Minimum Focus Distance
    0.35m (1.15 ft.)
  • Filter Size
    77mm
  • Dimensions
    83.5mm x 110.6mm
  • Weight
    645g

Average Customer Rating

*****
2/5 based on 1 review
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1 Star:

Inconsistent autofocus

By: Ed
06-17-2015
*****
The 17-55mm/2.8 lens is a great performer indoors due to its fast aperture and sharp glass. Unfortunately it exhibits inconsistent autofocus outdoors. The AF problem only occurs when focused on distant objects, and its extent is variable. Typically some shots in a series will be perfect whereas others will show severe front focusing, and some will be in between. The effect is most noticeable when shooting at large apertures. You may not notice it if the lens is stopped down.

The lens always produces sharp pictures when manually focused, but not when using AF.

The inconsistent AF problem is poorly documented on the Web, but was mentioned several times by Ken Rockwell in his review.

Contrary to this, many users find that the lens autofocuses fine. Therefore you should determine for yourself whether the AF is satisfactory, and return the lens in the return period if it is not. The problem cannot be fixed because it is due to the design of the lens. Accordingly, all copies behave the same.
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Canon EF 17-55mm f2.8 IS USM
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