Light stencils make tagging long exposures a snap

I’m a bit ashamed that I never thought of such a simple thing. I’ve messed around with long exposures and light trails a bit — even got some sweet results. But waving a flashlight or phone around is no way to do things if you want any kind of precision. Turns out all you need to do is slice your design in a piece of cardboard and shine the light through it.

More in-depth instructions and ideas here.

[via Make and Gizmodo]