★★How to use?1.Clean the lens and keep it dry before installing the UV Filer.2.Place the UV Filter on the front threads of the lens and rotated clockwise until it is immovable. Do not lock it so as not to affect the removal of the UV Filter.3.Rotate counterclockwise when removeing it.4.The main function of UV Filter is to eliminate the influence of ultraviolet rays on photography, but also to protect the lens. It is recommended to wear them for a long time. ★★How to confirm the lens size【Important】●One lens can be used for different cameras. A camera can have several lenses. So the lens size does not depends on the camera, only depends on the lens. ●Make sure your lens thread size is right, the number is always preceded by a “Ø”(diameter) symbol on the front of your lens or on the body of your lens. For example: Ø58 = 58mm lens thread size. Don't get confused with focal distance.●Please contact us to confirm your lens size if you are not sure about it.★★Compatibility●For Canon LensEF-S 18-55mm f/3.5-5.6 IS IIEF 50mm f/1.4 USMEF 85mm f/1.8 USM EF 24mm f/2.8 IS USM EF-S 55-250mm f/4-5.6 IS II…●For Nikon LensAF-S DX NIKKOR 55-300mm f/4.5-5.6G ED VR AF-P DX NIKKOR 70-300mm f/4.5-6.3G ED…and more other 58mm lens…★★Package Included1 ×HD UV Filter.★★Cleaning and Maintenance1.Before cleaning, please make sure that there is no ash layer on the UV Filter surface. It is recommended that the surface be cleaned by air blowing first.2.Do not wipe the lens directly with a self-dirty cloth. If hard particles are attached to the cloth, it may damage the filer coating.3.Do not wipe the lenses directly with a dry cloth or paper, otherwise the more gray the surface may appear. It is recommended to use the cleaning solution. ★★After Sale●We offer 120 days no reason to refund. ●Any problem, contact us first please.