JSR DSLR Camera Round Color Filter Camera Digital Filters 1. Optical resin lenses enhance transmittance and reduce reflectivity, ensuring image quality and reproducing high-definition images 2. Aluminum alloy frame for high hardness, oxidation resistance, and corrosion resistance 3. Frame knurling and matte finish prevent slipping and facilitate removal 4. Threaded front frame allows for mounting lenses, lens caps, and other accessories 5. 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 photography 6. Lens material: optical resin 7. Frame material: aluminum alloy 8. Applicable apertures: 30.53740.54346495255586267727782mm 9. Frame thickness: about 5.5mm 10. Lens thickness: about 1.1mm 11. Note: actual product corresponds to the model listed in the title. the pictures are for illustrative purposes only Proper lens cleaning steps: 1. Blow away dust from the lens surface 2. Clean the lens surface again with a clean, soft-bristled brush 3. Gently wipe with a microfiber lens cleaning cloth 4. Store in the designated case when not in use