An L lens is a line of SLR photography lenses mae by Canon. L lenses are Canon's top-of-the-line lenses and the "L" stands for "AsphericaL" (Canons first production aspherical lens carried an "AL" designation, Canon later went to "Aspherical", then "L"), though the "L" now officially stands for "luxury", a reference to the lenses' high price and build. Canon produces both L-series zoom and prime lenses for their obsolete FD lens mount and for their current EF lens mount used on all Canon EOS cameras (digital and film).