The Cokin 77mm NUANCES Clearsky 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 sky glow, 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 Cokin 77mm NUANCES Clearsky Filter can improve the results of nighttime images by absorbing the yellow light from sodium-vapor lamps or mercury-vapor lamps, 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 filter is constructed from optical-quality neodymium glass for clarity as well as color fidelity. It features an aluminum alloy filter ring for durability while remaining lightweight.

Reduces Light Pollution in Night Sky    Absorbs Yellow Sodium-Vapor Light    Absorbs Yellow Mercury-Vapor Light    1.5x Filter Factor, +0.6 Stop    Multi-Coated Glass Construction    Water, Oil, and Scratch Resistant    Aluminum Alloy Filter Ring    77mm Front Filter Threads    Padded Pouch

• Reduces the appearance of light pollution in video or images that include the night sky and minimizes illumination from artificial light sources
• For cameras with daylight film installed or a digital camera system with its daylight white balance setting selected
• Absorbs the yellow light from sodium-vapor lamps or mercury-vapor lamps, 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
• 1.5x filter factor reduces exposure by 0.6 stop
• Constructed from optical-quality neodymium glass for clarity as well as color fidelity
• Multi-coating prevents internal ghosting and reflections; is oil, dust, dirt, as well as scratch resistant; and provides an improved beading effect with water for more efficient cleaning
• Aluminum alloy filter ring is durable while remaining lightweight
• Top knurlings provide a more textured grip when mounting or removing filter from a lens
• 77mm front filter threads allow for use with other filters
• Padded pouch case for storage and transport

Related Questions and Answers

Q: 1. Will this work on a Sony a6000 ??? Sometimes these Circular types will not work on particular Digital Cameras !!! Thank You !!!

A: This filter will work with any lens that has a 40.5mm diameter. Circular polarizers are compatible with digital cameras, however linear polarizers are not.

Q: 2. Can I use this filter with my Nikon 70-200 F/2.8 VRii Lens and attach the lens hood

A: Yes you can. They are fully compatible.

Q: 3. Can this filter be screwed on a lens with 95mm filter thread (without using Evo P Series Filter Holder)?

A: The filter is only for use in a holder. For a 95mm lens, you would need this X-Pro size version: https://bhpho.to/3oGVzua Plus you would need this holder: https://bhpho.to/39rXyfr And this adapter: https://bhpho.to/35zB5Mw

Q: 4. can this be used on a zeiss .cp3 ? will it cause vignette if so ?

A: We're afraid not. Zeiss CP3 lenses are cinema lenses that do not have a filter thread, they have a 95mm front diameter, not a threading for a filter like this. This filter is not compatible with a CP3 lens.

Q: 5. How thick is the filter ring?

A: The ring itself measured 4mm. That is how much it will be after screwing onto the lens.

Q: 6. Please can you tell me if this product is suitable to mount on the front of a DJI Phantom 2 Vision + ? Thanks!

A: This product is not recommended for use with the DJI Phantom 2 Vision+.

Q: 7. Hi,is this filter can be on the Leica Summilux C T1.4 Primes???http://gulfcamera.com/leica-summilux-c-t1-4-primes/Ther are our lens tupe

A: As all Leica Summilux-C lenses share a uniform length, 95mm threaded lens front, the Zeiss 95mm Carl Zeiss T* UV Filter would be compatible for use on the Leica Summilux C T1.4 Prime lenses.

Q: 8. does this filter pass 5577 angstroms? I wish to pass 5577 for auroral photography, but otherwise block Na 5890 & other street lamp emissions. Maybe i can get a transmission spectrum for this filter? Otherwise, can you recommend an ideal auroral/light pollution filter? thank you.

A: Unfortunately, for whatever reason NiSI does not list the angstroms for this filter. However, I would take their word that it is: Reduces Light Pollution in Night Sky, Blocks Yellow Sodium-Vapor Light, Blocks Yellow Mercury-Vapor Light, and Blocks Yellow Light from Low CRI LEDs. If it does not, they will lose customers.

Q: 9. Compatible with Canon 24-105 lens?

A: Yes, the ZEISS UV Filter 77mm will fit onto any lens accepting a 77mm screw-in filter.

Q: 10. does this filter fit on the nikkor 70-300 f4.5-6.3 lens for nikon cameras?

A: The Nikon AF-P DX NIKKOR 70-300mm f/4.5-6.3G ED VR Lens uses a 58mm filter in front. The NiSi 58mm Natural Night Filter is a better choice. https://bhpho.to/3juKIAh