Red Filter and Magenta Filter 67 mm thread, suggested use depth 5-25m, underwater photography accessories for color correction. When sunlight penetrates the water's surface, it undergoes a spectral transformation, with warmer color wavelengths gradually diminishing and fading at increasing depths. As a result, underwater photos and videos often appear dominated by bluish and green hues, detracting from the true vibrancy of the marine environment. To combat this challenge, color filters—specifically red and magenta filters—are essential tools for underwater photographers. The red filter effectively restores warmth to your shots by compensating for the loss of red wavelengths, enhancing the color accuracy of coral reefs and marine life. In contrast, the magenta filter is particularly useful in greenish waters, helping to balance color tones and simulate the natural hues that are often lost. Utilizing these filters enables photographers to capture the breathtaking beauty of underwater scenes with greater clarity and realism, creating vivid images that reflect the true colors of the ocean.