| 摘要 |
An interchangeable lens selectively mountable to a first-type camera body and a second-type camera body, the first-type camera body including a first mount ring to which the interchangeable lens is mountable, the second-type camera body including a second mount ring to which the interchangeable lens is mountable, an outer diameter of the second mount ring being smaller than an outer diameter of the first mount ring. The interchangeable lens includes an annular packing made of a resilient material. An inner peripheral surface of the annular packing is positioned radially outside the second mount ring when the interchangeable lens is mounted to the second-type camera body. The inner peripheral surface of the annular packing is positioned radially inside an outer peripheral surface of the first mount ring when the interchangeable lens is mounted to the first-type camera body.
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