This excellent wide angle lens can be separated in two pieces (unscrewed): macro part and wide angle part. You can use it two ways: like macro lens (without wide angle part) and like wide angle with macro together. This is a very special feature of this lens at this special price. Deluxe high definition lens. Engineered to highest percision & specifications. Use for day/night digital video & camera recording. Multicoated optical glass. Extreme speed auto focus. 0.45x pro super wide angle corrected with macro. Anti - reflection coating. Ultra compact & lightweight titanium barrel housing.