JSR DSLR Camera Round Color Filter Camera Digital Filters1. Optical resin lenses enhance transmittance and reduce reflectivity, ensuring image quality and reproducing high-definition images2. Aluminum alloy frame for high hardness, oxidation resistance, and corrosion resistance3. Frame knurling and matte finish prevent slipping and facilitate removal4. Threaded front frame allows for mounting lenses, lens caps, and other accessories5. Filter function: different colored filters play different roles in color and black and white photography. Choose a filter based on your needs to harness the power of light and enjoy the thrill of photography6. Lens material: optical resin7. Frame material: aluminum alloy8. Applicable apertures: 30.53740.54346495255586267727782mm9. Frame thickness: about 5.5mm10. Lens thickness: about 1.1mm11. Note: actual product corresponds to the model listed in the title. the pictures are for illustrative purposes onlyProper lens cleaning steps:1. Blow away dust from the lens surface2. Clean the lens surface again with a clean, soft-bristled brush3. Gently wipe with a microfiber lens cleaning cloth4. Store in the designated case when not in use