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NEW Speedlite 580EXII Improved reliability through weather & dust sealing to the same standard and 1 series bodies Redesigned hotshoe on camera and flash making the connection stronger and weather proof New metal foot design New lockable battery door to prevent accidental opening. Speedlite controlled though camera including custom functions Backwards compatible on older bodies External metering sensor PC terminal to allow wired shooting 20% faster recycling time (0.9sec with battery pack and Ni-Mh) New oscillator motor has stopped recharge 'whistle'
