- Početna
- Video i foto oprema
- Optički filteri i oprema
- NiSi Natural Night 67mm
NiSi Natural Night 67mm
by NisiReduces Light Pollution in Night Sky
Blocks Yellow Sodium-Vapor Light
Blocks Yellow Mercury-Vapor Light
Blocks Yellow Light from Low CRI LED'sd for storage and transport
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Sadržaj pakiranja
- NiSi 67mm Natural Night Filter
- Filter Case
The NiSi 67mm Natural Night Filter is designed to reduce the appearance of light pollution in images or video that include the night sky and illumination from artificial light
sources. This effect can be obtained when this filter is used on a film camera system with daylight film installed, or on a digital camera system with its daylight white
balance setting selected.
Light pollution occurs in areas of the night sky that are above or near concentrated and intense sources of artificial light such as cities. These light sources can include
exterior and interior lamps for commercial or residential buildings, brightly lit advertisements such as billboards, streetlamps, as well as sports and entertainment venues.
Together, they can result in a type of light pollution known as skyglow, where individual stars, the Milky Way, and other astronomical features in the night sky are obscured.
Additionally, artificial lights clustered together can become difficult to individually discern. Light pollution from these "cluttered" sources can become a source of
distraction within an image and can resemble overexposed areas of glare.
When used, the NiSi 67mm Natural Night Filter can improve the results of nighttime images by blocking the yellow light from sodium-vapor lamps, mercury-vapor lamps, or low
Color Rendering Index LED's, common light sources within urban areas. By preventing the dominant wavelengths of light associated with the color of those lamps from being
recorded, the visibility of astronomical objects is enhanced, and artificial light sources are more clearly defined with less glare and improved contrast.
This NiSi 67mm Natural Night Filter is constructed from optical glass for clarity as well as color fidelity. Each glass surface includes one layer of nano coating. The nano
coating associated with this filter results in an improved beading effect when in contact with water or oil for greater cleaning efficiency.
Reduces the appearance of light pollution in images or video that include the night sky and illumination from artificial light sources
For cameras with daylight film installed, or a digital camera system with its daylight white balance setting selected
Blocks the yellow light from sodium-vapor lamps, mercury-vapor lamps, or low Color Rendering Index LED's, common light sources within urban areas
Enhances the visibility of astronomical objects, and where they appear, artificial light sources are more clearly defined with less glare and improved contrast
1.5 to 2.8x filter factor reduces exposure by 0.6 to 1.5 stops
Constructed from optical glass for clarity
Each glass surface includes one layer of nano coating that results in an improved beading effect when in contact with water or oil for greater cleaning efficiency
Aluminum-alloy filter ring for durability while remaining lightweight
67mm front filter threads allow for use with other filters
Plastic case include
Type | Broad-band light pollution reduction filter |
Size | 67 mm |
Density | 0.2 to 0.45 |
Filter Factor | 1.5 to 2.8 (0.6 to 1.5 stop) |
Multi-Coated | No |
Effect | Reduces the appearance of light pollution in images or video that include the night sky and illumination from artificial light sources by blocking yellow light from sodium-vapor lamps, mercury-vapor lamps, or low Color Rendering Index LED's |
Construction | H-K9L optical glass |
Front Filter Thread Size | 67 mm |
Front Lens Cap Size | 67 mm |
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