中心对焦对许多相机而言更为精确敏感，所以最好使用中心对焦而不是外部对焦——即便对焦后需要重新调整稳定。

The central focus point is more accurate/sensitive in many cameras, and so it is best to use this (instead of the outer focus points) — even if using it requires having to recompose afterwards.

youdao

如果您使用的是自动对焦相机，您需要先锁定焦点，这是因为大多数相机将焦点对准取景器中心的物体。

You'll need to lock the focus if you have an auto-focus camera because most of them focus on whatever is in the center of the viewfinder. Try it yourself.

youdao

你可以尝试对焦在与中心物体距离相近的任何一个光源上。

One can try focusing on point light sources at a similar distance to the subject of interest.

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