如果EF镜头不能在校准过的相机上正确的对焦，那么就要调整镜头上的电路。

If an EF lens is not autofocusing correctly with a calibrated camera, the circuitry of the lens itself can be adjusted.

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飞思顶级技术相机系统，精品相机工艺与数字影像技术共同结合，在同级别产品中首次引入了出厂前光学校准以及内置镜头数字校正功能。

Being the first to embrace new technology and integrate a touch-based user interface in a digital back, we are proud to continue the tradition with the XF Camera System. We call it the OneTouch UI.

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