Sigma 105Mm F/2.8 Ex Dg Os Hsm Macro Lens For Canon Eos Cameras Compatible With Canon 6D, 5D Mark 4, 5D Mark 3, 5D Mark 2, 6D Mark 2, 5Dsr, 5Ds, 1Dx, 1Dx Mark 2. LENS FEATURES: Life-Size (1:1) Magnification. 'Focus Free' Mechanical Design. 12.2' (31 cm) Close Focusing Distance. Non-Rotating Front Lens