Question about Canon Speedlite 430EX TTL Flash
200 is the "safe" speed at which the shutter curtains are open in order to expose the sensor to light. If you use too fast a speed , then the shutter will be closing by the time the flash is fired and a black (unexposed) band will appear on the picture. See these example pics: http://is.gd/lSFjLE
Luckily, you can override these settings by selecting "Hi Speed" on the back of the flash unit. This will allow you to use all speeds up to 1/8000 sec. Be warned though that the power decreases somewhat so that far away subjects won't get good coverage.
Hope this helps.
Posted on Jan 09, 2014
Nothing is going on. Your camera is working as designed.
Most cameras have an upper limit on the shutter speed when used with flash. This is called the flash sync speed. At speeds higher than this the shutter is never opened completely, and as a result you would get only a narrow slit of a picture.
Usually this is not a problem since the exposure is determined almost exclusively by the flash and the aperture. Any action is caught and stopped by the brief flash, not the shutter. The primary reason for controlling the shutter speed is to use a slow speed to allow the background to expose.
Your camera may have a special high-speed flash mode that fires off multiple flashes coordinated with the shutter movement. Since you didn\'t say what model Canon camera you\'re using, I can only suggest you check the manual.
Posted on Apr 26, 2013
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Posted on Jan 02, 2017
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