Purple filter suitable for tropical or green water area of 5‑25 meters, can effectively reduce the influence of green tones or green tones presented by green algae, correct color deviation. | The filter can used for underwater photography of waterproof camera shell, with spiral fixed on both sides. | Special macro shooting filter, macro shooting close‑up filter + 16X macro shooting filter. | Red filter suitable for tropical or blue water area of 5‑25 meters, can effectively restore red light source absorbed by water, correct color deviation. | Macro lens used to take pictures of flowers, small collectibles, coins and stamps, insects, small creatures or small objects that require close detail.