Las Vegas, NV–Sigma is calling its new APO Macro 180mm f/2.8 EX DG OS HSM “the world’s first 180mm macro lens that offers a magnification ratio of 1:1 and a large maximum aperture of f/2.8.”
As the successor to its 180mm f/3.5 EX DG macro lens, the new APO Macro 180mm lens now boasts the company’s proprietary Optical Stabilizer (OS) technology and a wide f/2.8 aperture to allow faster shutter speeds for narrow depth of field. With the OS feature, this lens offers the use of shutter speeds approximately four stops slower than would otherwise be possible, enabling handheld close-up photography.
Three “F” Low Dispersion (FLD) glass elements, which have a performance equal to fluorite glass, are included to provide correction for color aberrations, and an inner focusing system minimizes aberrations that occur as shooting distances change. The lens also features super multi-layer coating; Sigma’s hyper sonic motor (HSM) to ensure quiet, high-speed autofocus, as well as full-time manual focus capability; and a focusing distance of 18.5 inches. sigmaphoto.com