Sigma 28-300mm f/3.5-6.3 DG IF Macro Aspherical Lens for Pentax and Samsung SLR Cameras

Sigma 28-300mm f/3.5-6.3 DG IF Macro Aspherical Lens for Pentax and Samsung SLR Cameras Short Description

28-300mm F3.5-6.3 MACRO lens covers all the focal lengths from 28mm wide angle to 300mm telephoto with 10.7:1 high zoom ratio as well as macro capability. 28-300mm F3.5-6.3 MACRO packs a lot of performance in a compact package with ultra compact dimensions (Diameter 74mm and Length of 86mm) that make this lens the ultimate traveling companion. It?s the ideal lens all types of photography and optimized for digital SLR cameras. Reduced Ghosting and Flare The new multi layer lens coating and lens design reduce flare and ghost, which is a common problem with digital cameras and also creates an optimum color balance through the entire zoom range. SLD Glass elements and Aspherical Lenses This lens features one Special Low Dispersion (SLD) glass element and one aspherical lens in the front lens group, and one SLD glass element and three aspherical lenses in the rear lens group. This lens provides excellent correction for all types of aberrations. Macro photography with a 1:3 ratio The 28-300mm F3.5-6.3 DG MACRO lens has a minimum focusing distance of 50cm at all focal lengths and is equipped with a macro mechanism for close-up photography at 300mm telephoto, allowing a reproduction ratio of 1:3. Inner Focusing System This design allows for stability and compactness in design as changes in focus are made in an internal lens grouping. This also gives the advantage of a non-rotating front lens assembly, which is of great benefit when using polarizing filter and Petal-type hood. The Zoom Lock device 28-300mm F3.5-6.3 MACRO lens is equipped with a zoom lock to prevent the lens from creeping due to its own weight, and to offer protection whilst the lens is being carried.