X-sync.
The sync socket on a camera that triggers an attached electronic flash at the precise moment when the shutter is fully open.
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X-sync.
Techniques Glossary X-sync.
The sync socket on a camera that triggers an attached electronic flash at the precise moment when the shutter is fully open.
X-Synchronization A camera's flash synchronization mode that accommodates a flash that has an instantaneous peak light output. XGA XGA (EXtended Graphics Array) is a screen resolution of 1024x768 pixels.
X-SYNC - Same as "X Setting"
Shutter speed dial showing various speeds, including the X SETTING.
X-sync (flash sync) speed.
Timing is critical for flash photography. The burst of light from a flash unit is extremely brief (in milliseconds), and must occur when the shutter is fully open.
X-synch cable
Cable for connecting a non-dedicated flash or studio flash. The cable only passes the command to fire and no other instructions.
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X-sync can only be used up to a maximum shutter speed on focal plane cameras, unlike leaf shutters which can sync at any shutter speed. This is because a focal plane shutter is only fully open up to a certain speed, usually about 1/60th of a second.
X-sync socket
Pentax has added a flash sync socket to the left-hand side of the K20D body, allowing the use of external flashes and lights that aren't compatible with Pentax's wireless flash system.
There is an X-sync PC terminal on the side. X Flash sync goes all the way up to 1/500, twice as fast as a Nikon F5 or Canon EOS 1 V.
Diaphragm is five-bladed without click stops from f/2.8 to f/22.
Multiple exposure settings, including Green, Program, Sv, Tv, Av, TAv, M, Bulb, X-sync, and USER modes, provide extensive creative control over the exposure for photographers of all experience levels.
It has a vertically moving shutter, an x-sync speed of 1/90 s, and 1/4000 s shortest exposure time. In other words, the edge of the shutter has to move a distance of 24 mm in 1/90 of a second. The speed of such a shutter is 2.16 m/s. That's 7.
For shutter speeds slower than a certain point (known as the X-sync speed of the shutter),which depends on the camera, one curtain of the shutter opens, and the other closes after the correct exposure time.
Hence, I do not view it as a problem. The more frequently used items (GPS, Flash, x-sync cord) are on top, the remainder at the bottom. The illustration is like an explosion view of the actual packing. Specifically it contains: ...
This might include requiring an aperture that is outside the range available with your lens, or a shutter speed that is faster than what your camera/flash system supports (the "X-sync speed" - usually 1/200 to 1/500 second).
Roughly speaking, FP or M-synchronisation is constructed to fire flashbulbs just before the shutter is fully open, allowing a build-up time, and X-synchronisation fires electronic flash exactly at the moment the shutter is fully open.
 See also: Flash, Camera, Speed, Light, Shutter
  
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