A small, battery-powered flash unit that mounts on the camera's hot shoe or is used off the camera. Speedlight is Nikon's name for its flashes (Canon uses Speedlite), but the word is now used for any such unit.
Speedlights are light and portable. Many can be tilted for bounce flash and controlled wirelessly. Compare strobe light.
Martin Kaninsky
Martin is the creator of About Photography Blog. With over 15 years of experience as a practicing photographer, Martin’s approach focuses on photography as an art form, emphasizing the stories behind the images rather than concentrating on gear.