Sigma make lenses to fit almost every digital camera made. Many of their lenses are excellent and work well with Nikon, Canon, Fuji, Pentax, Minolta and Olympus digital SLR cameras, but there are some compatibility issues with older lenses, especially with newer Canon EOS digital SLR cameras. Check out my compatibility page. Which Sigma lens should you buy? How do they compare to Nikon or Canon lenses?