Flash to Subject Distance
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Skip Navigation Linksunderwater Photo Course :: (7) Advanced Techniques :: Mastering Equipment :: Using Underwater Strobes :: Flash to Subject Distance

Flash to Subject Distance

U/W Photo Course

Learn u/w photography the easy way!

The Inverse Square LawThe quantity of light falling on a subject is inversely proportional to the square of the distance from the source dictates that when you double the distance you quarter the light. Due to the immense light absorbing properties of water drop-off is even more pronounced underwater.

trade secrets! Things the pro's don't want you to know! The effective distance of any underwater strobe is no more than two metres (approx. 6'). The secret of getting successful results with electronic flash underwater is to

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