Component for: SLR Macro lens Black Lens structure (elements/groups): 12/8 Maximum aperture number: 32 Closest focusing distance: 0.31 m Features- Diagonal Angle of View: 24° - Lens Construction (elements/groups): 10/9 - No. of Diaphragm blades: 8 - Minimum Aperture: 32 - Closest Focusing Distance (m): 0.31 - Maximum Magnification (x): 1 - AF Actuator: USM - Filter Diameter (mm): 58 Autofocus lens for macro photography up to life-size (1x) magnificationMedium telephoto lens with a macro feature for 1x magnification. Fluctuations in spherical aberrations caused by focusing are suppressed, and high-quality images are obtained at all focusing distances. With eight aperture blades, good background blur is obtained even when the aperture is decreased by one or two stops. A focusing limiter which limits the magnification to 0.25x is built-in. Lens system Minimum aperture number 2.8 Closest focusing distance 0.31 m Maximum aperture number 32 Number of diaphragm blades 8 Lens viewing angle, di