This 0.39X wide angle macro lens can create a wider perspective and deeper sensor. The professional Japanese optical glass can take more light in and reduce glare and reflection. Lens mount 30mm, comes with a 37mm to 30mm adapter work with 30mm or 37mm camera mount. Features: 0.39 times widen the lens angle - take photo from a bigger perspective. A detachable macro lens for close-up photography for small objects - closer and bigger . Professional Japan optical glass ensure better light transmission while reduce unwanted glare and reflection. High quality aluminum alloy construction. Lens mount 37mm, comes with a 37mm to 30mm adapter work with 30mm or 37mm camera mount. 74mm filter mount. Specifications: Material: Aluminum Alloy and Optical Glass Lens Multiples: 0.39X Structure: 2G Lens Mount: 37mm Adapter: 37mm to 30mm ND and CPL Mount: 74mm M.O.D: 0.1mm Max. Image Circle: greater than or equal to diameter 6.2mm EFFL: 4.95-49.5mm Function: Macro Lens, Wide Angle Item Size: 7.4 x 7.4 x 4.4cm or 2.9 x 2.9 x 1.7" (with covers) Item Weight: 135g or 4.8oz (with covers) Package Size: 8 x 8 x 7.5cm or 3.1 x 3.1 x 3" Package Weight: 173g or 6.1oz Package List: 1 x Lens with covers 1 x Adapter 1 x Pouch