Lens Construction - 16 Elements in 12 GroupsAngle of View - 69.3 - 27.9 degreesNumber of Diaphragm Blades - 7Minimum Aperture - F22Minimum Focusing Distance - 30cm/11.8 in.
Product DescriptionAn upgrade to its predecessor, the 18-50mm F2. 8-4. 5 DC OS HSM is a lens dedicated to digital SLR cameras with APS-C size image sensors offering a large aperture and Sigma’s Optical Stabilization. Once again, Sigma has also engineered the built-in OS function, an anti-shake system, for Sony and Pentax ...