High-Speed Sync (FP Flash)
Enables flash sync with all shutter speeds from 30 to 1/8000 sec (Canon EX-series Speedlites)
FE (Flash Exposure) Lock ...
FP High-Speed Sync 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. FPS Frames per second.
High-Speed Sync (FP) Flash
In situations where you want to use a shutter speed that's faster than the camera's flash sync speed you can do so if the camera or your external flash supports what's known as high-speed sync flash (also called FP or focal ...
Focal plane high-speed sync, or FP-sync, traditionally involved special, slow-burning flashbulbs that maintained nominally constant light output over the time it took the travelling slit to complete its journey across the film frame.
What is FP mode or high-speed sync?
FP mode, also known as focal plane mode or high-speed sync, is a way of circumventing a camera's X-sync limitation.
Some fancy automatic cameras with their dedicated flashes have a high-speed sync function that uses a series of flash bursts over time to evenly illuminate each part of the frame above the flash-sync speed.
displays extensive information on the camera's operation, including AF points, a focus confirmation light, Shutter speed, Aperture, ISO speed, AE lock, Exposure compensation, Spot metering circle, Exposure warning, AEB, Flash ready, High-speed sync, ...
The old, "famously reliable" PockWizards failed on me frequently, but these just work, even in high-speed sync mode. Let me show you an extremely uninteresting photo that tells an uninteresting story: ...
 See also: Camera, Speed, Light, Sensor, Mode
  
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