The metal outer layer is hard, wear-resistant, moisture-proof, corrosion-resistant, and pollution-resistant.High optical quality, equipped with special double-sided coating and partial multi-layer coating, reduce halo, reduce dispersion, effectively prevent reflected light from the lens surface and external , the lens is of high quality and has high resolution, making the images you and clearer, make your imaging more colorful.Made of high-performance optical glass, it is suitable for all mainstream of digital cameras and cameras.No vignetting design, advanced coating technology brings high transmittance, the inner wall of the lens barrel and the edge of the lens are blackened to prevent reflection, the lens barrel is made of high-quality aluminum, and the outer surface is all finely anodized.Compatible with all SLR and digital cameras of ////PANSONIC//.Product Name: Teleconverter LensInterface diameter: 67MMFront diameter: 82MMMagnification: 2.0Optical structure: 4 pieces in 2 groupsStructure: two sets of two piecesProduct color: blackProduct material: metal + optical glass + coatingPackage Contents:1 x Teleconverter lens1 x Front lens cover1 x Rear lens cover1 x protective bagOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.