A band stop filter comprises a transmission line with center and outer conductors, and coaxial resonators. A processor reads the information stored in the memory and performs a predetermined process on it. In addition, the electronic device includes an operator input operatively coupled to at least the camera circuitry for enabling an operator to provide an input unrelated to focus control of the camera lens in a first operating condition, and to provide a manual focus control input to the camera lens in a second operating condition.