NiSi 49mm Nano IR Neutral Density Filter ND1000 (3.0) 10 Stop | NiSi Optics USA
Urth 49mm ND1000 Neutral Density Filter Plus+ UND1000PL49 B&H
Amazon.com : JJC 49mm ND Filter ND1000 Fixed 10-Stop Neutral Density Fader for Canon EOS M50 M50 Mark II M5 M6 M6 Mark II M200 M100 with EF-M 15-45mm Kit Lens and