When photographing the moon, I set my camera to manual mode and select the spot metering mode.

拍摄月亮时，我将我的相机设置为手动模式并选择现场计量模式。

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To make this work, use the partial metering mode (or spot metering mode) over the subject where you want to lock the flash output then press the asterisk (*) button.

相机的测光方式要设置在局部测光或点测光方式，测光点对着你想要锁定曝光值的目标，按下锁定钮。

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