Light meters seem to be a controversial subject these days. On the one side, you’ve got those who swear by them, wouldn’t shoot without them. On the other, you’ve got those that just don’t see the point and consider them a waste of money. They’ll both defend their position to the bitter end. Then you’ve got the rest of us. Those who choose to use them or not, but don’t really care if others do or don’t.
Personally, I own one. An old Sekonic L718. Sometimes I use it, and sometimes I don’t. It really all depends on what I’m shooting. For those that aren’t sure how they work, though, or have debated whether it’s worth getting one, have a watch of this video. In it, filmmaker Tom Antos walks us through exactly how they work, and when and why you might use one.