[Description] Marelux Macroview MV-15 Close-Up Lens [Specification] Lens Construction: 4 elements; 2 groups Diopter (Underwater Focal length) :+15 (66.66mm) Working Distance :60mm - 85mm (From 1st Lens Suface) Max Magnification: x2.6 Dimensions:Φ70X40mm Mounting:M67X P0.75 Weight (Air) :252g Weight (Underwater) :150g Depth Rate :100m