- In Carpentry, usually the thinnest side of a piece of lumber. eg. on a 1"x4" x 2'-0", the the edge is the 2'-0" long x 3/4" tall side.
- In lighting and Video, the outer most part of a light beam's throw. Fresnels=soft-edged lighting, ERSs=hard-edged.
- Some lighting desks use "edge" rather than "focus" when referring to the sharpness of a gobo
, so as not to confuse with focus of pan
3. The perimeter of anything.