SIGMA LENS 500 F4 DG OS HSM CANON SPORTCovering all the essence. Portable, durable and of a high standard A Masterpiece of hyper telephoto lens. Photographers typically choose a prime lens when they require top image quality. However, the new flagship lens of our Sports line, the SIGMA 500mm F4 DG OS HSMSports fulfills this need while incorporating SIGMAs latest technologies and delivering a full range of advanced features and functions: enhanced dust and splash resistant structure*,