Here's how you can measure which ND filter to use, and why I rely on 3, 6, and 10-stop neutral density filters. For $39, I recommend this 3-stop Hoya NDX8 https://bhpho.to/2Iw3ERD

Watch my 23-filter test on Indy Mogul:
   • Ultimate Buyer's Guide to ND Filters  

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http://griffinhammond.com/music

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http://griffinhammond.com/class