摄镜头101 的镜头筒(lens barrel) 中，构成变焦镜头的每个组的光学系统例如布置在短 焦端( 广角端)，通过操作变焦开关110 来改变每个组的光学系统的位置，并且可以...
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然后轻轻将镜头的调焦筒拉出，镜筒就可以继续向左转动以获得更近的对焦距离。
THEN pull the focusing barrel out slightly, and the lens barrel can be swung over farther to the left, to get into the close focusing range.
本发明提供一种数码相机用镜头，其包括第一筒、第二筒及底座。
The invention provides a lens for the digital camera including the first canister, the second canister and the basement.
这到过滤器转接筒鱼螺丝附件过滤器通过一个52毫米螺纹和工作得很顺利，包括12.5 x微距镜头的附件，允许优秀近距离拍摄。
This Fisheye attachment screws onto the filter adapter tube via a 52mm filter thread and works very well with the included 12.5x Macro Lens attachment allowing superior close-up photography.
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