Optical Stabilization (OS) for Sharper Images - Sigmas built-in Optical Stabilization helps reduce camera shake when shooting handheld. HSM (Hyper Sonic Motor) for Fast and Quiet Autofocus - The Hyper Sonic Motor delivers quick, smooth, and near-silent autofocus performance. Bright f/2.8 Aperture for Beautiful Background Blur - The fast f/2.8 maximum aperture allows more light into the lens, helping produce sharp images even in lower-light situations. True 1:1 Macro Magnification - Capture life-size detail with a 1:1 reproduction ratio, allowing you to photograph small subjects like insects, jewelry, flowers, and textures with incredible clarity. This Bundle From Teds Electronics Includes: Sigma 105mm F2.8 EX DG OS HSM Macro Lens for Nikon DSLR Camera, Digital High-Definition 62mm UV Filter, 16GB Transcend SDHC Memory Card Class 10, Vivitar 62' Tripod High Quality 8lb Capacity 3-Way Fluid Pan Head Quick Release Bubble Level, Professional Cleaning Kit APS-C DSLR Cameras Sensor Cleaning