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I MADE AN ND FILTER HACK FOR MY SIRUI PHONE LENSES!! - YouTube
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A Clip-On ND Filter for Smartphones - YouTube
ND8 Neutral Density Filter 62mm - Pro Series | Reeflex Store
Inexpensive ND Filter Hack For Your Lenses
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DIY photo filters with everyday objects - CNET
A new professional filter holder for Samsung S smartphones by Jose Antunes - ProVideo Coalition
How to Use Your Smartphone as a Graduated Neutral Density Filter
GoPro ND Filters and How to Make Them - Drone Nodes
How To Create a DIY Low-Cost Neutral Density Filter
DIY $10 10-Stop Neutral Density (ND) Filter : 7 Steps (with Pictures) - Instructables
Try this DIY Neutral Density Filter for Long Exposure Photos
PolarPro Iris Smartphone ND Filter
New Beastgrip Filters for Smartphone Filmmakers - Fixed ND's, CPL and VND
