Sigma 18 35mm f18 dc hsm lens pentax fit
The sigma 18 35mm f18 dc hsm lens is the first wide angle zoom lens as of 22nd april 2013 to achieve a maximum aperture of f18 throughout the entire zoom range the sigma 18 35mm is a standard zoom lens that offers a focal range equivalent to 27 525mm in the 35m format the 9 blade rounded diaphragm creates an attractive round bokeh at large aperture settings while the hsm hyper sonic motor ensures a silent high speed af this lens incorporates a wide glass molded aspherical lens with s