Tamron SP AF 11-18mm f4.5-5.6 Di II LD Aspherical (IF) (Canon). Lens structure (elements/groups): 15/12, Focal length range (f-f): 11 - 18 mm, Minimum aperture: f/22. Filter size: 77 mm, Weight: 0.375 kg. Colour of product: Black. Dimensions (WxDxH): 83.2 x 83.2 x 78.6 mm