Sigma is known for its high-quality lenses, which are compatible with a wide range of camera brands, including Canon, Nikon, Sony, and others. They offer a broad range of lenses, from wide-angle and standard zoom lenses to telephoto and macro lenses, all designed to deliver sharp and detailed images. Sigma's lenses are popular among professional photographers and enthusiasts alike, thanks to their excellent optics, build quality, and affordability.