A gray filter that reduces all wavelengths of colors equally, achieving the effect of dimming the light source without changing its color temperature.
One manufacturer's offerings, from
http://www.tlsinc.com/toolfilterfax.html:
Quote:
Neutral Density Filters
Neutral Density filters are designed to reduce the intensity of light without affecting color temperature. They are usually applied to windows to reduce the level of exterior light and bring it within the range of interior light level.
| To Reduce Intensity Product Number Transmission | |
1/2 Stop Rosco ND.15 3415 70% | |
1 Stop Rosco ND.3 3402 50% | |
2 Stop Rosco ND.6 3403 25% | |
3 Stop Rosco ND.9 3404 12% | |
2 Stop BlackScrim. Perforated material black both sides 3421 25% | |
2 Stop RoscoScrim. Perforated matrial. Black/Silver 3809 25% |
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neutral density filter
Linear Mode
