| 摘要 |
A system for composing and focusing a hand-held underwater camera system includes a first light source and a second light source which each emit a beam of visible light through the water. The two visible non-laser light beams converge at a light intersection within the field of view and the depth of field of the lens. The camera system and a photography subject, such as a fish, are moved with respect to each other until the two light beams, which converge at a beam intersection, converge on the photography subject to indicate that the photography is in focus and within the picture area. A mount holds the lights in relation to the lens, and the mount is readily removable for use on hand-held underwater cameras for close-up and macro photography within fifteen inches.
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