This 0.39X wide angle macro lens can create a wider perspective and deeper sensor. The professional Japanese optical can take more light in and reduce glare and reflection. Specifications: Material: Aluminum Alloy & Optical Lens Multiples: 0.39X Structure: 2G Lens Mount: 37mm ND & CPL Mount: 74mm M.O.D: 0.1mm Max. Image Circle: 6.2mm EFFL: 4.9549.5mm Function: Macro Lens, Wide Angle Item Size: 7.4 * 7.4 * 4.4cm / 2.9 * 2.9 * 1.7" (with covers) Item Weight: 135g / 4.8oz (with covers) Package Size: 8 * 8 * 7.5cm / 3.1 * 3.1 * 3" Package Weight: 173g / 6.1oz Package List: 1 * Lens with covers 1 * Pouch