fine focusing adjustment knob

例句：

1. 1.The camera has a fine focusing adjustment knob that allows you to fine-tune the focus.
   这台相机有一个精细聚焦调节旋钮，可以让你微调焦距。
2. 2. The engineer used the fine focusing adjustment knob to adjust the focus of the camera lens.
   工程师使用精细聚焦调节旋钮调整了相机镜头的焦点。
3. 3. During the filming, the director often uses the fine focusing adjustment knob to fine-tune the scene.
   在拍摄过程中，导演经常使用精细聚焦调节旋钮来微调场景。