Case and hood (LH876-04) supplied Three SLD glass lens elements and four aspherical lens elements help minimize optical aberrations to fulfill the uncompromising image quality standard of the Art line. The OS functionality, newly designed HSM, lens barrel designed for high rigidity, mount with dust- and splash-proof design* delivers the performance and functionality that help pros succeed in many other fields of photography. *Except for SIGMA mount. https://www.sigma-global.com/en/lenses/a019_24_70_28/
