Sigma 105mm f/2.8 EX DG OS HSM Macro Lens for Canon EOS Cameras 14PC Accessory Kit. Includes Manufacturer Accessories + 3PC Filter Kit (UV-CPL-FLD) + 4PC Macro Filter Set (+1,+2,+4,10) + MORE Life-Size (1:1) Magnification; "Focus Free" Mechanical Design 12.2" (31 cm) Close Focusing Distance Non-Rotating Front Lens Optical Stabilizer (OS) Hyper Sonic Motor for Quiet Autofocus