Optical excellence with close-focusing capabilities, the Leica L-mount 105mm f/2.8 DG DN Macro Art Lens, from Sigma, is a short-telephoto prime optimized for macro use. With a minimum focusing distance of 11.6", and a 5.5" working distance, this lens offers a life-size, 1:1 reproduction ratio for accurate rendering of close-up subjects. Its optical design incorporates one SLD element, which also helps to realize high clarity and color accuracy by suppressing various aberrations and color fringing. A Super Multi-Layer Coating has also been applied, which controls flare and ghosting for greater contrast.