When there’s insufficient or unsuitable light available to take a picture, it’s of paramount importance to have a ready source of supplementary light to fulfill the need. That’s where Sigma’s EF-530 DG super-electronic flash comes into play. Designed exclusively for Canon digital SLR cameras, the flash offers a powerful guide number of 174 feet/53 meters and boasts the latest TTL automatic flash exposure control for easy operation. More significantly, the EF-530 is outfitted with a host of advanced features, including a modeling flash function, a multi-pulse flash, a TTL wireless flash, an FP (high-speed) flash, a rear-curtain synchro flash, and a manual flash mode that allows the photographer to set the flash power level by up to eight stops. The auto power-off function, meanwhile, automatically shuts off the display to save battery power. And when the flashgun is fully charged, the flash emits a confirmation-ready light, letting you check the flash exposure level thr
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