Your choice of lens depends on your subject and how you want to depict it. One of the attractions of a DSLR with interchangeable lenses is the ability to adapt flexibly to every situation and style of expression.
When you have a variety of lenses to choose from, you can make the most of the DSLR as a creative instrument for transforming a photo opportunity into a work of art.
For state-of-the-art performance, Sigma's SA mount lenses feature a flare and ghost reducing Super Multi-Layer Coating; HSM (Hyper Sonic Motor); OS (Optical Stabilizer) anti-shake function; FLD ('F' Low Dispersion), ELD (Extraordinary Low Dispersion) and SLD (Special Low Dispersion) glass; aspheric elements; and other cutting-edge technology.
All Sigma standard focal length, wide-angle, telephoto, macro, fisheye, and other lenses are designed to work in synergy with the SD1 to maximize the full color capture system's exceptional image quality.
Sigma lenses are designed with one aim: to help you take better photos. Sigma offers more than 40 different lens types, distinguished by their exacting optics, smooth focusing and durable stability.
Sigma has a strict policy of developing essential core technology in-house. For its interchangeable lenses, this encompasses optical design, mechanism design, firmware development, electronic circuit and system design, and mold design.
By making almost all parts in its own integrated manufacturing system, Sigma can assure peerless quality at an accessible price. Every lens that proudly bears the Sigma name is a valuable piece of craftsmanship that brings the spark of life to the photographic images you create.