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The techniques involved in using photographic equipment underwater. Underwater photography is used to document subjects in freshwater lakes and...

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Figure 1.Dolphin and underwater photographer—13-mm lens. The extreme wide angle of the 13-mm lens (170° diagonal coverage) was used here to capture a shot of an Atlantic bottlenose dolphin and diver. By using an extreme wide angle, it is possible to cover large subjects from a close distance, thereby maximizing color and resolution. (Photograph by Stephen Frink)

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Figure 2.Over/under shot, Solomon Islands—16-mm lens. The over/under shot (one-half above the water and one-half below) is best done with a housed camera and dome port. An extreme wide-angle lens is typically used, although sometimes a split diopter is also used to account for the difference in refractive index and exposure values between the air and water. (Photograph by Stephen Frink)

From Encyclopedia article 'Underwater photography'

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Figure 3.Underwater photographer on a shipwreck—15-mm lens. Shipwrecks provide excellent subjects for wide-angle photography, and including a diver as an element of composition can add color to an otherwise monochromatic subject, as well as a sense of scale. (Photograph by Stephen Frink)

From Encyclopedia article 'Underwater photography'

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