Description Filter Kit Description: 3-piece diving filter set: red (deep) + magenta/magenta + pink (snorkel) Filter set of 3: CPL + ND8 + ND16 ND/PL filter set of 4: ND4/PL + ND8/PL + ND16/PL + ND32/PL ND filter set of 4: ND4 + ND8 + ND16 + ND32 Filter set of 4: MCUV + CPL + ND4 + ND8 Filter set of 6: MCUV + CPL + ND4 + ND8 + ND16 + ND32 Set of 8 filters: MCUV + CPL + ND4 + ND8 + ND16 + ND32 + Red (Deep) + Magenta/Magenta Specification: Applicable models: ACTION 2 Material: aluminum frame + optical glass/optical resin lens Net weight: about 5g/pc Filter size: 40*40mm Package size: 89*51*25mm (single pack) / 115*101*24mm (3/4 pack) / 118*101*47mm (6/8 pack) ----------CPL is a commonly owned filter, generally used in landscape photography to eliminate unnecessary polarized light, making the whole picture clearer and more transparent ----------ND filter Use this filter to gain more freedom to control aperture and shutter, bring more exposure methods and creative space for photography creation, and effectively prevent overexposure, ND The following numbers represent the ability of the ND mirror to block light ---------- NIGHT anti-light pollution filter, which can effectively reduce light pollution and make the picture present. The real color anti-light pollution filter is made of optical glass material to meet the high-definition picture quality ----------Red filter Suitable for 5-25 meters of tropical or blue water, can effectively restore the red light source absorbed by water, and correct color deviation ----------Pink filter Suitable for 1-5 meters of shallow water or blue water, it can effectively restore the red light source absorbed by water, and correct color deviation ----------Purple filter Suitable for 5-25 meters of tropical or green water, can effectively reduce the influence of green tint or green tint caused by green algae, correct color deviation