Amazon.com : JJC 58mm ND Filter ND2-2000 VND Variable Neutral Density Adjustable Fader for Canon EOS Rebel T7 T6 T8i T7i T6i T6s T5i SL3 90D 80D with EF-S 18-55mm Kit Lens
SKU0127 K&F Concept 67mm ND Fader Variable Neutral Density Adjustable ND Filter ND2 to ND400 for Canon 7D 700D 600D 70D 60D 650D 550D fo
Amazon.com : JJC 67mm Variable Neutral Density Filter ND2 to ND400, Slim Fader ND Filter for Canon EOS R RP R6 with RF 24-105mm F4-7.1, Canon 90D 80D with EF-S 18-135mm f/3.5-5.6
Canon EF-EOS R Adapter with Drop-in ND Filter Review! Things to consider before buying. - YouTube