Most flash bulbs used to take a photograph

According to Official Guinness Records,

The most flash bulbs used to take a photograph is 300 and was achieved by Jason Groupp (USA) in Cincinnati, Ohio, USA, on 8 May 2011.
The flash bulbs were mounted onto four boards of 75 bulbs each and were triggered simultaneously by radio transmitters. Each board had around $20,000 worth of equipment mounted on it.

For a complete list of 2011 records, please visit 2011 Guinness Records in United States.

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