The type of lens mount included on your DSLR camera determines which types of lenses it may use. Canon offers two lens mounts with its DSLRs: the EF mount and the EF-S mount. The EF-S mount only accepts EF-S-compatible lenses. The EF mount will accommodate any EF lens and any EF-S lens.As long as your other camera lens is able to fit the lens mount on your Canon DSLR camera, it should be compatible.