namtso

28mm那个头拧上去听不到卡的一声，拧不动了，但是卡不住，用点力气不按旁边那个卸镜头的钮就可以把镜头拧下来。调节光圈的时候都觉得镜头有点晃悠。不过测光，对焦，光圈联动什么的一切正常，拍起来也没问题。
90那个头就一切正常，那看来是镜头的问题？

大家快出出主意，这算怎么回事儿

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When a feeling was there, they felt as if it would never go;
When it was gone, they felt as if it had never been;
When it returned, they felt as if it had never gone.