| 摘要 |
PROBLEM TO BE SOLVED: To provide an operation button system used for an electronic camera making operability good. SOLUTION: The operation button system comprises a first operation key part 36a, and a second operation key part 36b arranged so as to surround the first operation key part. The second operation key part comprises menu keys 62a-62d for being transferred to a menu mode regulating a plurality of mutually different menus. The operation button system is composed so as to select and determine the menu regulated in the menu mode selected with the menu key. The first operation key part comprises a disk body 60, arranges a decision key 61 in the center part of the disk body, and arranges selection keys 61a-61d on the peripheral face side of the disk body. The second operation key part is arranged concentrically with the disk body so as to surround the disk body. Then, the menu keys are arranged between the selection keys on an extension line from the center of the disk body. COPYRIGHT: (C)2004,JPO&NCIPI
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