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cwirving: Sync at 320th
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cwirving: Sync at 400th
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cwirving: Sync at 500th
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cwirving: Two flashes
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cwirving: Two flashes again
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cwirving: 580EX II with CSRB
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cwirving: Junk flash with CSRB
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cwirving: Flash setup for distance test
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cwirving: Distance test - across divided street and small park
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cwirving: Distance test - even further away