Sigma’s 150-600mm F/5-6.3 DG OS HSM Contemporary lens features a light-weight and compact construction. It has a new and improved Optical Stabilizer, for mobile, handheld shooting in the field, and features a new water and oil-repellent coating on the front and rear lenses. At 4.1 inches by 10.2 inches, it features 20 elements in 14 groups â€“ including one FLD (â€œFâ€ Low Dispersion) and three SLD (Special Low Dispersion) glass elements â€“ with a minimum aperture of F22 and minimum focusing distance of 110.2 inches. Its maximum magnification ratio is 1:5. Also featured: an updated Optical Stabilizer (OS) with an accelerometer for improved vertical and horizontal panning, essential for bird, wildlife and motor sports photography; enhanced functionality for better portability and usability; and a dust- and splash-proof mount. Two new switches have been added for ease of use, including a new zoom lock switch capable of locking at any focal distance and a Manual Override (MO) switch for improved control of focusing performance. Visit www.sigmaphoto.com for further details, and follow the company on social media.