Designed for photographers who already have strong diving skills and understand basic photographic techniques, this reference defines what advanced underwater photography is while teaching the skills necessary to create professional-quality images. Opening with a quick overview of the basicssuch as exposure, focus, subject selection, and compositionthe author then expands on each of these topics, showing the techniques pros use to achieve truly stunning images. A major factor in advancing beyond the basic level of underwater photography is moving from a point-and-shoot or semi-adjustable camera to using a full-featured digital SLR camera. The myriad equipment choices available when making this transitionincluding cameras, lenses, underwater housings, and the lighting units designed to be used with themare explained, as are their respective advantages and shortcomings. Because both beginning and advanced underwater photographers can have equipment-related issues, a trouble-shooting section is included to ensure that minor equipment problems wont ruin a costly dive trip.