Técnicas básicas de la fotografía por WikiLibros
mayo 21, 2011
mayo 06, 2011
Filtros de Densidad Neutral
ND filter types
| lens area opening, as fraction of the complete lens | Filter Optical Density | f-Stop Reduction | % transmittance |
| 1 | 0.0 | 100% | |
ND2 | 1/2 | 0.3 | 1 | 50% |
ND4 | 1/4 | 0.6 | 2 | 25% |
ND8 | 1/8 | 0.9 | 3 | 12.5% |
ND16 | 1/16 | 1.2 | 4 | 6.25% |
ND32 | 1/32 | 1.5 | 5 | 3.125% |
ND64 | 1/64 | 1.8 | 6 | 1.563% |
ND128 | 1/128 | 2.1 | 7 | 0.781% |
http://www.austadpro.com/blog/neutral-density-filters-and-graduated-nd-filters/
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