When diving deeper than 15 feet, red light is seriously diminished. In order to capture the true color of objects deep on the reef, either light must be added, or a red filter must be used.
I use a flash to illuminate most of the photos that I take. Sometimes, when I see the colors that result from a flash photo, I am quite surprised at how the photo looks relative to how my eyes perceive the colors.
Today, I took 2 sets of photos, with and without a flash (at 40 to 50 feet deep), to demonstrate the loss of red at depth. The more vivid photos were taken with the flash. The drab photos were taken without. Various sponges were my target subjects.
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