“What is the Guide Numer for this External flash? How much distance can I get with this flash? ex: Guide Number : Approximately 30 ft./9m at ISO 100”

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• 28m (92 ft) for ISO 100

  Answered by HammerHerb 10 years ago

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• I believe the guide number is 197 ft. at ISO 100

  Answered by monga 10 years ago

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• Guide Number: 108' at ISO 100 and 50mm

  Answered by Bower 10 years ago

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