What situations are best suited for spot metering?

Question

I have found myself using spot metering on several occasions in order to get the right exposure, such as sunsets and on bright days with a subject in the shade. What other situations are well suited for spot metering instead of the standard matrix mode?

Answer

Shooting the moon is a pretty good time to use it. :-)

Basically anytime the subject you actually want a clear photo of is drastically different in brightness compared to the rest of the scene.

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