Canon EF-S 17-55mm f/2.8 IS USM Sigma TC-2001 For controlling focus

For controlling focus

Maximum Diameter: 55 mm

Electronic aperture

The Zeiss Planar optical design benefits users by providing an almost distortion-free image

Canon EF-S 17-55mm f/2.8 IS USM Sigma TC-2001 For controlling focusCanon EF S 17 55mm f 2. 8 IS USM Lens Front and rear lens caps To meet user demands for a fast EF S zoom lens, Canon has specially designed a new lens with a large aperture of f 2. 8 for select Canon Digital SLR cameras.* 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