| 摘要 |
Notification is given of the fact that a television camera lens has developed a malfunction. An extender lens includes an imaging lens having a 1× magnification and an imaging lens having a 2× magnification. For each of these imaging lenses, a master lens is adjusted in such a manner that the light-receiving surface of an image sensor will be brought to an in-focus position. The master lens adjustment processing is executed periodically and data indicating a history of amounts of adjustment of the master lens is stored in memory per imaging lens. Data indicating the history of amounts of adjustment of the master lens is read from the memory. Whether the television camera lens is malfunctioning is detected from the read data indicating the history. If a malfunction is detected, an error LED emits light to notify of the malfunction. |
