internal defocusing

例句：

1. 1. The camera's internal defocusing caused the image to be blurry.
   相机的内焦点缺失导致图像模糊。
2. 2.During the filming, the director noticedan issue with the internal defocusingof the lens.
   在拍摄过程中，导演注意到镜头的内焦点缺失问题。
3. 3. Theengineer had to adjust the focus manually tocorrect the internal defocusing in thecamera.
   工程师不得不手动调整焦点来纠正相机内的失焦问题。