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User Manual for NiSi 77mm Natural Night Filter Click to enlarge the picture
Contents of the user manual for the NiSi 77mm Natural Night Filter
- Product category: Special Applications Filters NiSi
- Brand: NiSi
- Description and content of package
- Technical information and basic settings
- Frequently asked questions – FAQ
- Troubleshooting (does not switch on, does not respond, error message, what do I do if...)
- Authorized service for NiSi Special Applications Filters
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User manual for the NiSi 77mm Natural Night Filter contain basic instructions
that need to be followed during installation and operation.
Before starting your appliance, the user manual should be read through carefully.
Follow all the safety instructions and warnings, and be guided by the given recommendations.
User manual is an integral part of any NiSi product,
and if it is sold or transferred, they should be handed over jointly with the product.
Following the instructions for use is an essential prerequisite for protecting
health and property during use, as well as recognition of liability on the part of the manufacturer
for possible defects should you make a warranty claim. Download an official NiSi user manual in which you will find instructions on how to install, use, maintain and service your product.
And do not forget – unsuitable use of a NiSi product will considerably shorten its lifespan!
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Product description The NiSi 77mm 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 77mm 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 LEDs, 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 77mm 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 LEDs, 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
- 77mm front filter threads allow for use with other filters
- Plastic case included for storage and transport
In the Box NiSi 77mm Natural Night Filter Filter Case Limited 1-Year Warranty Table of Contents
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Technical parametersNiSi NIR-NGT-77 Specs | Density | 0.2 (0.6-Stop) to 0.45 (1.5-Stop) | | Circular Size | 77 mm | | Front Accessory Thread / Bayonet | 77 mm | | Filter Material | Glass | | Coatings | Single-Coating | | | | Package Weight | 0.25 lb | | Box Dimensions (LxWxH) | 4.3 x 4.3 x 0.8" |
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