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fp

where the initials stand for Focal Plane. Designed for use with focal-plane shuttersthese bulbs make a nearly uniform amount of light for a relatively long time. Generally,FP flashbulbs can be used with any shutter speed and any firing delay except Xsync . The FP bulb will extinguish during exposure intervals longer than 1/60second but enough light will have reached the film to make the exposure.

mirglossary

fp

wherethe initials stand for Focal Plane. Designed for use with focal-plane shutters thesebulbs make a nearly uniform amount of light for a relatively long time. The ideais to turn on the light before the focal-plane shutter starts to open and keep thelight on until the shutter is completely closed. Firing delay for flashbulbs is indicatedby code letters: F - fast; M - medium; MF - mediurn fast; S - slow
mirglossary

fp

Refers to the Focal Plane of a camera.
Photo Tips

fp

A special flashbulb that can be used at certain shutter speeds is called
mirglossary

fp

Focal plane high-speed synchronization that occurs with a flash unit that emits pulses of extremely rapid flash illumination permitting light to pass through the shutter to the film or sensor at shutter speeds greater than the camera s standard sync speed.
Photo Tips

fp

A feature of flash units and SLR cameras that enables flash pictures to be taken at shutter speeds higher than the camera s normally synchronized speeds.
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