Points in Focus Photography

Neutral Density Filter Factors Table

A table of ND filter strength in stops, decimal density (i.e. 0.3), and Hoya’s x-factor/Cokin’s ND#.

StopsDecimal Factor (B+W, Formatt/Hitech, Lee, )ND#/#x Factor (Cokin, Hoya)
10.32
1.50.45
20.64
2.50.75
30.98
41.216
61.864
9400
103.01,000
134.010,000
206.01,000,000
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