Canon EF-S 17-55mm f/2.8 IS USM Lens acpoverstock with a twin flash featuring

with a twin flash featuring a guide number of 27

The legs are outfitted with fixed rubber feet

Extending the range of compatible lenses

this lens is adept at isolation focus for shallow depth of field effects

yet effective optical design that incorporates one aspherical element

Canon EF-S 17-55mm f/2.8 IS USM Lens acpoverstock with a twin flash featuringA 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.