8 terms
Flash sync speed is the shortest exposure time at which the whole sensor is uncovered at once, so a single flash burst lights the full frame…
A flash trigger in flash photography is a device that fires one or more flash units remotely when the camera shutter opens, usually by radio or…
Guide number in flash photography rates flash output as subject distance multiplied by f-number for correct exposure at a stated ISO.
High-speed sync is a flash mode that pulses the flash rapidly so it can light the whole frame at shutter speeds faster than the camera's flash…
Off-camera flash is a flash photography technique that fires a flash unit away from the camera to control light direction, shape and contrast on the subject.
A speedlight is a compact, battery-powered flash unit for photography that mounts on the camera hot shoe or works off camera as a portable light source.
A strobe is an electronic flash unit, usually mains or battery powered, that fires a brief, intense burst of light for studio and location photography.
TTL flash is automatic flash metering that measures light through the lens, usually from a preflash, to set flash power for each exposure.