Canon EF-S 17-55mm lens
From Wikipedia, the free encyclopedia
| EF-S 17-55mm f/2.8 IS USM | |
 |
|
| Key features | |
|---|---|
| Maker: | Canon |
| Image stabilization: |  Yes |
| Ultrasonic motor: | Yes |
| Short back focus: | Yes |
| Macro capable: |  No |
| Application: | Standard |
| Technical data | |
| Type: | Special |
| Focal length: | 17-55mm (35 mm equivalent of 27-88mm) |
| Aperture (max/min): | f/2.8 – f/22 |
| Construction: | 12 groups / 19 elements |
| # Diaphragm blades: | 7 |
| Close focus distance: | 0.35 m (1.15 ft) |
| Max. magnification: | 0.17 |
| Physical | |
| Max. diameter: | 83.5 mm (3.3 in) |
| Max. length: | 110.6 mm (4.4 in) |
| Weight: | 645 g |
| Filter diameter: | 77 mm |
| Accessories | |
| Lens hood: | EW-83J, optional |
| Case: | LP1219, optional |
| Angle of view | |
| Horizontal: | 68° 40' – 23° 20' |
| Vertical: | 48° – 15° 40' |
| Diagonal: | 78° 30' – 27° 50' |
| History | |
| Introduced: | 2006 |
| Retail info | |
| MSRP US$ | $1,179 |
The Canon EF-S 17-55mm f/2.8 IS USM is a high-quality standard zoom lens for Canon digital single-lens reflex cameras with an EF-S lens mount. The field of view has a 35 mm equivalent focal length of 27-88mm.
Contents |
[edit] Reception
[edit] Praise
It is praised as "one of the best general/multi-purpose lenses available",[1][2] and ideal for available light photography on a Canon APS-C camera.[3]
The fast f/2.8 aperture, combined with 3-stop Image Stabilization, makes the 17-55 much faster (5 stops) than an un-stabilized f/3.5–5.6 Canon EF-S 18-55mm lens, which is a frequent kit lens, and thus the 17-55 is much more suited for hand-holding and available light photography, and it is a practical event photography lens.
[edit] Criticisms
This lens is widely regarded as being prone to flare when used without a hood,[2] and especially with low-quality UV filters.
The 17-55 suffers from vignetting at f/2.8 of 0.5-1 EV throughout the focal range.[4][3]
Chromatic aberration is a relative weakness at the wide end (at the edges and corners),[3] but is quite low for a zoom in this range.[4]
Some[5] but not all[2] users have reported the lens gathering a lot of dust inside of it, a problem that Canon has apparently acknowledged.
[edit] Quality
The 17-55 is not an L-series lens, but it has some UD (ultra-low dispersion) lens elements, which are largely reserved for L-series lenses, and some say that the 17-55 has comparable image quality to L-series lenses.[4][6] Some regard the decision to not designate the lens as L-class as marketing-driven.[4]
"The resolution figures are among the very best seen so far for an APS-C standard zoom lens."[4]
The build quality is inferior to L-series lenses (plastic body, not magnesium alloy), though superior to the EF-S 17-85mm.
[edit] Similar lenses
As a general purpose EF-S zoom lens, the alternatives to the 17-55 are the EF-S 18-55mm f/3.5-5.6, which is a cheaper kit lens, and the EF-S 17-85mm f/4-5.6 IS USM, which is midway between the 18-55 and 17-55 in some respects—depending on which version of the 18-55 one is comparing—and boasts a longer telephoto end.
The 17-55 is at times compared to the EF 17-40mm f/4L USM, which has similar image quality (despite the latter being L series and the 17-55 not being so designated), and is cheaper, though the 17-55's faster aperture and IS make it more suited (by 4 stops) for hand-holding and available light photography.
The EF 28-90mm is an inexpensive kit lens and is not comparable to the 17-55, having slower aperture, lower image quality, and no image stabilization.
[edit] Notes and References
- ^ Greenspun, Philip. Canon EF-S 17-55/2.8 IS USM Review. photo.net. Retrieved on 2008-02-25.
- ^ a b c Carnathan, Bryan. Canon EF-S 17-55mm f/2.8 IS USM Lens Review. The-Digital-Picture.com. Retrieved on 2008-02-25.
- ^ a b c Canon EF-S 17-55mm f/2.8 IS USM. SLRgear.com. Retrieved on 2008-02-25.
- ^ a b c d e Canon EF-S 17-55mm f/2.8 USM IS - Test Report / Review. photozone. Retrieved on 2008-02-25.
- ^ Canon EF-S 17-55 f/2.8 IS USM. fredmiranda.com Post of 2007 October 18 by Anjo Francke reports dust from early use; post of 2008 Jan 12 by Cipi reports no dust after heavy use in dusty climates.. Retrieved on 2008-02-25.
- ^ "My 17-55 matches or exceeds the optical performance of my L-Series zooms in this similar focal length range", The-Digital-Photo.com
[edit] External links
|
|||||||||||||||||||||||||||||||||||||||||
