Categories: SLR Lenses
A tremendously flexible standard zoom for APS-C-format DSLRs, the EF-S 17-55mm f/2.8 IS USM from Canon pairs the 27.2-88mm equivalent focal length range with a bright f/2.8 constant maximum aperture. Benefitting this design is a sophisticated optical layout, which includes both Ultra-Low Dispersion glass and aspherical elements to significantly reduce chromatic and spherical aberrations for improved clarity and sharpness throughout the zoom range. A Super Spectra coating has also been applied to individual elements to suppress flare and ghosting for increased contrast when working in bright environments.
Beyond the optical attributes, this 17-55mm is also characterized by its advanced three stop-effective Image Stabilizer system to minimize the appearance of camera shake. Also complementing handling is a sophisticated ring-type USM, which provides quick, quiet, and accurate autofocus performance along with full-time manual focus override.
| Focal Length | 17 to 55mm (35mm Equivalent: 27.2 to 88mm) |
| Maximum Aperture | f/2.8 |
| Minimum Aperture | f/22 |
| Lens Mount | Canon EF-S |
| Lens Format Coverage | APS-C |
| Angle of View | 78° 30' to 27° 50' |
| Minimum Focus Distance | 1.15' / 35 cm |
| Maximum Magnification | 0.17x |
| Optical Design | 19 Elements in 12 Groups |
| Diaphragm Blades | 7, Rounded |
| Focus Type | Autofocus |
| Image Stabilization | Yes |
| Filter Size | 77 mm (Front) |
| Dimensions (ø x L) | 3.29 x 4.35" / 83.5 x 110.6 mm |
| Length at Maximum Extension | 5.55" / 141 mm |
| Weight | 1.42 lb / 645 g |
Packaging Info
| Package Weight | 1.855 lb |
| Box Dimensions (LxWxH) | 8.5 x 5.4 x 5.4" |
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