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Amazon.com: JJC 77mm ND Filter ND1000 Fixed 10-Stop Neutral Density Fader for Canon EF 16-35mm f4L, EF 24mm f1.4L II, Sigma 24mm f1.4 DG HSM, Nikon AF-S 20mm f1.8G ED Lens &
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variable ND Filters Shootout! cheapest but surprisingly great! REVIEW of Fotga and generic ND-Faders - YouTube
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