Tamron SP AF 90mm f2.8 Macro 1:1 Di (Pentax AF). Lens structure (elements/groups): 10/9, Focal length range (f-f): 90 mm, Closest focusing distance: 0.29 m. Filter size: 55 mm, Weight: 0.405 kg. Colour of product: Black. Dimensions (WxDxH): 71.5 x 71.5 x 97 mm