Camera Lens UV Protection Filter 49mm for Canon EF 50mm f/1.8 STM & for Sony E mount 18 55mm f/3.5 5.6 OSS Lens|filter 49mm|protection filterlens uv - AliExpress
Amazon.com : 49mm ND Variable Neutral Density Filter for Canon EF 50mm f/1.8 STM Lens : Electronics