Amazon.com : 49mm 7PC Filter Set for Canon EF 50mm f/1.8 STM Lens - Includes 3 PC Filter Kit (UV-CPL-FLD) and 4PC Close Up Filter Set (+1+2+4+10) : Electronics
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49mm Adjustable ND Filter ND2-400 Neutral Density for Canon EF 50mm 1.8 STM Lens | eBay
Canon RF 800mm f/11 IS STM Lens with Essential Accessory Bundle: Variable Neutral Density Filter, Multi-Coated UV Filter, Water Resistant Backpack with Padded, Adjustable Dividers & More - Walmart.com
Canon EF 50mm f/1.2L USM Lens (1257B002) + Filter Kit + Cap Keeper Base Bundle - Newegg.com
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
NDT Fusion Auto Adapter - Canon EF Lens to Fuji X Cameras w/ Variable ND – Fotodiox, Inc. USA
Which filter size should I buy to fit a 50mm lens? - Quora
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ND8 ND Neutral Density Motion Blur Shutter Speed Filter for Canon EF 50mm f/1.8 STM Lens : Electronics - Amazon.com
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49mm Adjustable ND Filter ND2-400 Neutral Density for Canon EF 50mm 1.8 STM Lens | eBay