| 摘要 |
PURPOSE:To prevent oscillation and displacement of a finder optical system by providing a finder optical system driving mechanism between an interlocking mechanism interlocked with displacement of a photographic optical system and the finder optical system and breaking the interlock between the finder optical system and the photographic optical system when the adjusting operation of the photographic optical system is performed for focusing or the like. CONSTITUTION:Two finder optical systems 56 and 57 are provided on a camera body 1 so that their magnifications can be switched, and finder magnifications are switched by a switching driving member 55 when a photographic optical system 3 is displaced for the purpose of switching the focal length. This finder optical system driving mechanism has the first engaging part which can be engaged with the interlocking mechanism interlocked with displacement of the photographic optical system and the second engaging part which can be engaged with a fixed member, and the finder optical system driving mechanism is so constituted that the interlock between the finder optical systems and the photographic optical system is broken when the photographic optical system is displaced for focusing or the like; and thus, the visual field is prevented from being difficult to see by displacement or oscillation of finder optical systems when the adjusting operation of the photographic optical system is performed.
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