Now that digital images are everywhere, lens performance requirements have become dramatically higher and more stringent. Photos can be displayed on computer screens and examined at the pixel level, so lens aberrations show up clearly, and differences in lens performance are obvious at a glance. This is precisely why we are focusing on genuinely high picture-quality, doing our utmost to eliminate lens aberrations at the manufacturing stage, and determinedly striving to ensure that optical data reaches the image sensor with no interference on the way.
There's a reason why Sigma continues to insist on the very highest quality in its product manufacturing: our love of photography is second to none. We deeply appreciate the photographer's desire to record and express—the passion of the photographer. We understand the need to capture the moment that gives rise to a unique work of art. Our endless passion for photography spurs us on to the kind of technical innovation that raises picture quality and performance, and it keeps us looking for new ways to facilitate artistic expression.