Sony DSLR SAL30M28 30mm F/2.8 Alpha Digital SLR Camera Lens + Accessory Kit Light, compact macro lens ideal for photography of flowers, insects and other small subjects 1:1 magnification ratio with 12.9cm minimum focusing distance for extremely clear, life-size close-ups Fixed focal length design offers high quality optical performance DT lens design optimized for cameras with APS-C sensor: light, compact and easy to carry Smooth Autofocus Motor (SAM) for smooth AF operation