在一些照片中，主体对焦不准，背景反而很清晰。

In some of the pictures the subjects are out of focus while the background is sharp.

《柯林斯英汉双解大词典》

目标运动或对焦不准可能造成图像局部模糊。

Aiming at the problem that images may be partially blurred because of moving object or out of focus.

youdao