K&F Concept 77mm Variable ND Filter
Article number: | KV31 |
Availability: | In stock |
NDnumber | Optical density | f-stop reduction | Fractional transmittance | |
0 | 0 | 100% | ||
ND2 | 0.3 | 1 | 50% | |
ND4 | 0.6 | 2 | 25% | |
ND8 | 0.9 | 3 | 12.50% | |
ND16 | 1.2 | 4 | 6.25% | |
ND32 | 1.50 | 5 | 3.13% | |
ND64 | 1.8 | 6 | 1.56% | |
ND100 | 2 | 62⁄3 | 1% | |
ND128 | 2.1 | 7 | 0.78% | |
ND256 | 2.4 | 8 | 0.39% | |
ND400 | 2.6 | 82⁄3 | 0.25% |