Sigma is the largest independent lens manufacturer in the world.
Sigma offers a wide range of professional quality optics for most manual and autofocus cameras.
Extend the capabilities of your clinical camera or update your recreational equipment. All photographic lenses are designated by their focal length, i.e. 28mm, 50mm, etc. The lower the focal length number, the wider the angle of view. A wider angle of view allows landscapes and group shots. As the focal length increases, the angle of view decreases and the image subject is pulled closer, or magnified.