Tamron DA18. Lens structure (elements/groups): 16/13, Focal length range (f-f): 18 - 250 mm, Closest focusing distance: 0.45 m. Diameter: 74.4 mm, Length: 84.3 mm, Filter size: 62 mm. Colour of product: Black. Dimensions (WxDxH): 74.4 x 74.4 x 84.3 mm