|Closest Focusing||0.39 m|
|Max. Magnifcation||1:2 (0.5x)|
|Filter Size||70 mm|
|Diameter x Length||70 x 90 mm|
|Weight||654 gr (1.44 lb)|
The example I own is made by Tokina. It's heavy, and should come with a seperate adapter that gives full 1:1 coverage. The build quality is extremely high, as is the optical performance. Combined with the fast 2.5 speed, and the probable low price, this is a steal of a lens.