[Versatile Depth Performance] The red filter is optimized for 5-25m (5.5-27.3yd) in tropical or blue waters, effectively restoring red light absorbed by water. the purple filter performs equally well in green waters at the same depths, counteracting green tones caused by for balanced color reproduction. [Professional Photography Enhancement] Transform your underwater shots with professional-grade color correction. whether you're diving in tropical waters or capturing marine life, our filters eliminate color casts to deliver stunning, true-color underwater photography results every time. [Durable Construction] Crafted from optical glass and aluminum alloy, this filter offers exceptional clarity and rugged durability. the 58mm diameter (approx. 2.3in) size is perfectly compatible with 9 cameras, providing reliable performance in demanding underwater environments. [Easy Installation & Stability] Designed for seamless use with camera housings, this filter features a screw-fixed design on both sides for secure attachment. the premium soft glue lining ensures a stable fit when pressed directly onto your shell lens, allowing for quick and easy installation. [Color Correction Underwater] Our dive lens filter effectively corrects color deviations in underwater environments, enhancing your photo and video quality. it restores colors lost due to water absorption, ensuring vibrant and true-to-life images in challenging underwater conditions.