When should I turn on the rangefinder of the D3100?

Question

There is a "set rangefinder on" kind of option in D3100.

Are there any special cases when I "should" set the rangefinder on?

Asked by Anisha Kaul

Answer

I don't have a D3100, but everything I can find says that the electronic rangefinder is a manual focus aid. When the camera is in manual focus mode and you turn on the rangefinder, the exposure meter will indicate which way to turn the lens to focus. So you could turn it on when you want some help focusing manually.

Answered by Ward

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