This 16.6-stop, 67mm ProND-100000 ND Solar Filter from Hoya provides a 16.6-stop exposure reduction, and its 5.0 density creates a darkening of the entire image with a 0.001% transmittance that is effective for solar and solar eclipse photography. With this filter, users can capture photographs with a wider aperture or a slower shutter speed than normally required. The filter material provides an accurate neutral color rendition without any noticeable colorcast to the images, and its vapor-deposition application to the glass lens ensures an even and consistent layer. An aluminum-alloy filter ring holds the filter for durability while remaining lightweight.

This filter is designed specifically for photography applications. This filter is not suitable for direct solar viewing with the naked eye, including with optical viewfinders.

5.0 Optical Density    Multicoated Optical Glass    Aluminum-Alloy Filter Ring    Designed for Solar Photography    Allows Reduced Shutter Speed    Enables Wider Aperture and Long Exposure    Not for Direct Viewing of the Sun

Related Questions and Answers

Q: 1. Is This Filter Really A 62mm Filter? Why In The Photo It Says 77mm?

A: Yes, Hoya ProND EX 1000 Filter (62mm, 10-Stop) is 62mm not 77mm.

Q: 2. Does The Hoya XPD-77ND100000 ND Filter also filter UV and IR, or does it act only on visible light?

A: It is not a UV or IR filter. It is just neutral density.

Q: 3. Can the OEM Lens hood be used while filter is on? I can still use the lens hood with the old Hoya variable ND.

A: Hoya 77mm Variable Density II Filter gets in the way of the original lens hood and it cannot be used.

Q: 4. Will this filter produce an image with yellow sun or white color cast sun?

A: The Hoya ProND-100000 Neutral Density 5.0 Solar Filter (82mm, 16.6-Stop) will produce a yellow/color cast not white of the Sun. One of the safest filters does produce white color. And that is, https://bhpho.to/3Q9J3n6.

Q: 5. Will you need to remove this filter during the total eclipse to see & photograph anything?

A: Yes, solar filters are designed for shooting the entire sun and partial eclipse phases. You will need to remove the filter during totality to photograph the corona. If you also want to photograph Bailey's beads and the diamond ring effect, you will want to remove the filter about 20-30 seconds before totality begins and replace it about 20-30 seconds after totality ends. This will not damage your camera equipment. Another answer implied that it is safe to view the eclipse through your camera's optical viewfinder with this filter in place, but that is NOT the case. This filter is NOT certified for visual observation. Place a viewfinder cover or a piece of tape over your optical viewfinder as a precaution, and only use live view to focus and compose your frames.

Q: 6. Is this filter ISO 12312-2 certified?

A: This is the only information Hoya is publishing: https://hoyafilter.com/product/prond100000/#description

Q: 7. Is this filter ISO certfied?

A: If by ISO certified, you mean is it certified for visual (eyeball) use - not to my knowledge. This filter is intended for photo use only. For visual observation, use a filter intended for direct visual observation of the sun. I'm using the Hoya filter on a Canon PowerShot SX50 for taking photos of the uneclipsed or partially eclipsed sun using the LCD viewfinder. Don't use the optical viewfinder! Safe visual solar filters are readily available and cheap.

Q: 8. Does this filter have click stops for each ND stop? If so, do the click stops work even when the set screw/knob is removed?

A: No, the filter has no stopping when changing the filter strength. It is smooth throughout, with no hard stop.

Q: 9. Can one place the 77 mm Hoya CPD-77ND100000 ND filter over a 77mm Hoya UV filter, and in so doing protect the sensor further from UV? There may be slight vignetting, but if shooting an eclipse that will not matter.

A: Yes you could do this. That way you protect the Sensor more. That shouldn't be an issue. You just might have a slight Vignette.

Q: 10. Hi there. I would like to know if filter Hoya 67mm Prond-100000 Densidad Neutra 5.0 Solar Filtro (16. Is ok for nikon P900 ???

A: Yes, the Hoya ProND-100000 Neutral Density 5.0 Solar Filter (67mm, 16.6-Stop) will work with a Nikon P900 camera.