range of defocusing

例句：

1. 1. The range of defocusing affectsthe clarity of the image.
   失焦的范围影响图像的清晰度。
2. 2. The photographer needs to adjustthe focus to avoid a range of defocusing.
   摄影师需要调整焦点以避免范围的失焦。
3. 3. The experiment showed that the rangeof defocusing was within acceptable limits.
   实验显示，失焦的范围在可接受的范围内。