Constructions: 7 elements in 5 groups Aperture Range: F/2-F/16 Ideal Aperture with 10 diaphragm blades Materail: Aluminum Body and Copper Core Compact and Lightweight 0.7oz/320g Filter Size: 43mm Closest focus distance: 0.35m

Product Dimensions : 2.2 x 2.2 x 2.4 inches Item Weight: 11.4 ounce Features & Functions ·Lens shell material with the copper core aluminum, its front cover and mount are used metal casting, obviously high-quality appearance. ·The lens uses seven high-quality optical glass lenses, and provides superior quality, it is suitable for a variety of shooting occasions (travel, street, portrait and documentary, etc.) ·Its shape for the retro style,there is a clear sense of stalls when switching aperture.In particular, the lens built a pull hood, both easy to use, and also to prevent the loss of the hood.