The Sigma Macro 105mm F/2.8 EX DG is a large aperture medium macro lens ideal for capturing the world's smallest inserts or objects. It houses a flat-field front lens element so that it can shoot images of flat design, such as artwork or postage stamps, and be precise all the way across the image. The Sigma Macro 105mm is suitable for macro photography delivering the closest perspective of the human face. The lens construction consist of 11 elements in 10 groups and three Special Low Dispersion (SLD) glass elements providing prime color correction and sharpness across the full range. The integrated Super Multi-Layer coating minimizing flare and ghosting. The Sigma Macro 105mm f/2.8 features a minimum shooting distance of 12.3-inches utilizing the floating internal focus system permitting the ability to shoot with keen sharpenss without regards to distance. Never miss the photo opp to capture life's tiniest creatures with the Sigma Macro 105mm EX DG lens.