defocusing amount

例句：

1. 1. The camera's defocusing amount is causing blurry images.
   相机的失焦量导致图像模糊。
2. 2.The scientist measured the defocusing amount of the lens to improve its performance.
   科学家测量了镜头的失焦量以改善其性能。
3. 3.The engineer adjusted the defocusing amount to compensate for the lens's imperfections.
   工程师调整了失焦量以补偿镜头的不完美。