There is no fixed recipe in approaching metering in all kinds of situations. It's a mix-n-match of different techniques - all used to make sure I get optimum exposure for my images.

当然因为情况多种多样，不可能有一种固定方法能适用于所有的情况。一般需要多种技术进行组合以取得最好的曝光。

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The AE lock mode locks the exposure value for precise exposure metering.

自动曝光锁定模式能锁定精确曝光测定时的曝光值。

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However, it is great for inputting the lens details for an AIS lens to compute the metering exposure.

不过，它对为对于一只AIS透镜来说，计算测量的暴露输入透镜细节大有好处。

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