Features: Perspective Compressed Effect The 100mm focal length,which is the equal of 160mm on the APS-C camera, it will let the work generate spatial perspective compressed effect and more close to the background. Large Aperture F2 large aperture, which blur the background and highlight the subject. Supports Auto Focus (AF) and Manual Focus (MF) Mode Supports auto focus (AF) and manual focus (MF) mode, allows you choose the focus mode as needed. Nine Aperture Blades The aperture blades up to 9 pieces, which allows you to shoot the near circular defocused spots, appropriately narrow the apertures can shoot the 18 astral effect. Metal Bayonet, Outstanding durability Adopts chrome high precision metal bayonet, which effectively improve the goodness to fit the camera body and the bayonet ruggedness, wear and corrosion resistance for durable use. Equipped with Focusing Range Indicator Equipped with focusing range indicator to convenient you to judge the object distance and the size of the depth of field. Supports Multiple Shooting Modes Supports multiple shooting modes, and the aperture and data can be displayed in the EXIF Information. Glass Lenses, Multi-coated The whole series products are formed by glass lenses, which with multi-coated and effectively improve light transmittance and the inhibit the ghost shadow and glare in photographing. Gold Plating Technology Adopts gold plating metal contacts, effectively improving the signal conductivity and corrosion resistance.