If you're looking for a lens for your Canon camera, you can choose from a wide range of lenses. Canon EF lenses are for SLR cameras with a full frame sensor and EF-S lenses for SLR cameras with an APS-C sensor. Canon has RF lenses for mirrorless cameras with a full frame sensor. The EF-M lenses are for mirrorless cameras with APS-C sensor. In addition to Canon's own lenses, lenses from brands such as Tamron and Sigma also fit Canon cameras.