Flash sync is refers to the canon lp-e5 battery flash right in the full open shutter the moment, make the whole picture ablaze even feel the flash. Use flash attention should be paid to control the shutter time, when the shutter speed higher than digital camera flash synchronization time, the shutter will in the picture some part of the body had yet to be shut down, leading to flash exposure picture black edge.
Not synchronous flash there are canon lp-e6 battery two main reasons: the shutter speed higher than the synchronization time DuoGe use flash, flash, flash time not the flash consistent.
Ordinary consumer digital camera canon powershot sd750 battery flash synchronization time at 1/400 SEC, when using flash within, if the shutter speed higher than digital camera flash synchronization time, can appear not synchronous flash the phenomenon, the picture will be black side or picture by light, even at this time reduce the shutter speed, make its displeasure in flash synchronization time can. Usually, use the built-in digital camera flash won't appear not synchronous flash the phenomenon, use the built-in flash digital photograph opportunity for automatic shutter speed, namely a cap on flash synchronization time, user can not be higher than the shutter speed accesses the speed, when use external flash, users need to pay attention to the shutter time, avoid flash sync.
When used at the same time DuoGe flash, if these flash is not also lit up, the picture of whole partial dark or appear may black edge. If this occurs, the user can use matching trigger led flash to ensure all the flash also received flash signal, and illuminate the foreground body.canon powershot sd30 battery
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