In photography, a neutral density filter (ND filter) can be a colorless or grey filter. An ideal neutral density filter reduces and/or modifies intensity of all wavelengths or colors of light equally, giving no changes in hue of color rendition. The purpose of a neutral density filter is to allow the photographer greater flexibility to change the aperture, exposure time and/or motion blur of subject in different situations and atmospheric conditions
Questions tagged [neutral-density]
129 questions
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Can I use a 10 stop + 8 stop ND filter to photograph a solar eclipse?
I don't have a solar filter but I have a 10 stop, 8 stop, 4 stop and a 2 stop ND filters can I take the 10 stop + 8 stop and combine them to make a 18 stop filter or the 10 stop + 4 stop + 2 stop to make a 16 stop filter to photograph a solar…
user67251
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When using ND filter, do I need to use full stop, 1/2 stop, or 1/3 stop?
For example, when I use ND1000 filter, I know theoretically I have to increase shutter speed by 10 stops. Does this apply regardless of different stop increment settings (full stop vs half stop vs 1/3-stop), or do they say 10 stop in full stop…
elquimista
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Where can I get cheap neutral density filters that work in the near infra-red?
I'm wondering if I can find a cheaper source of ND filters that work in the near infra-red (out to ~800nm.) We have been using Kodak Wratten Gel filters. (ND 0.70) We originally purchased large sheets, but they now come in only smaller (and more…
George Herold
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Improvised neutral-density filter
I teach physics at a community college, and due to the covid-19 epidemic, we're developing a lab kit for our students so that they can do labs at home in the fall. It's challenging but also kind of fun to try to figure out labs that are good…
user21068