Exhibiting improved clarity, flatness, and reduced reflectivity, this 82mm Formatt Hitech Firecrest Ultra ND Filter 82mm 4-Stopfrom Formatt Hitech Firecrest Ultra ND Filter 82mm 4-Stopis a neutral density filter providing a 4-stop reduction in exposure. This 1.2 density creates a darkening of the entire image, allowing you to photograph with a wider aperture or longer shutter speed than normally required. By slowing your exposure time or increasing your aperture, you are able to control depth of field and convey movement more easily. Designed using inspiration from their cine Firecrest filters, these Ultra filters receive an additional lapping and polishing process during production to ensure lower reflectivity and improved clarity and sharpness.

The design of this filter has been optimized for use with digital sensors and promote nearly flat attenuation of visible, UV, and infrared light. Due to imaging sensors' greater susceptibility to infrared light, compared to traditional film, color casts can occur when photographing darker subjects that require increased exposure times. This filter provides a high level of neutrality across all three spectrums in order to eliminate color casts and ensure cleaner, truer blacks.

Applied to the outside of the SCHOTT Superwite glass construction is a 15-layer Firecrest multicoating, which helps to minimize reflections and flare in order to maintain truer colors and contrast. The multicoating is also scratch resistant and hydrophobic to benefit the overall durability of the filter. The filter is set within a 5.5mm-thick SuperSlim aluminum filter ring, which features front threads for stacking additional filters or attaching a lens cap.

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.

1.2 Optical Density    15-Layer Coating on Outside of Filter    SCHOTT Superwite Glass    SuperSlim 5.5mm-Thick, Stackable Ring    Hydrophobic and Scratch Resistant    Darkens Entire Image    Neutral Results Across All Spectrums    Secondary Lapping and Polishing Process

The Firecrest Ultra series filters exhibit greater clarity and have lower reflectivity than the original Firecrest filters. Borrowing from the range of Firecrest cine filters, the Ultra series filters undergo a secondary lapping and polishing process after the initial polishing and bonding stage. This additional step helps to ensure flatness and consistency for improved image quality.

ND 1.2 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 4-stop exposure reduction, this filter allows you to control depth of field and convey movement more easily.

Attenuates infrared light, as well as visible and UV wavelengths, to maintain color neutrality and suppress color casts due to increased exposure lengths.

The 15-layer Firecrest coating has been applied directly to the outside of the filter glass by way of a vacuum-formed, hard-coated, electrolytic process. The multicoating is water and scratch resistance for greater overall durability.

SCHOTT Superwite glass promotes maintained image clarity and is set within a 5.5mm-thick SuperSlim aluminum filter ring.

Related Questions and Answers

Q: 1. So is this filter ISO 12312-2 (also written as ISO 12312-2:2015) certified?

A: Yes it is: https://hoyafilter.com/product/prond100000/

Q: 2. 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: 3. Does it have hard stops at 1 and 8 or it rotates 360?

A: No, the Cokin 58mm NUANCES Variable ND Filter (1 to 8-Stop) does not have hard stops.

Q: 4. Does it hav front filter threads, for stacking other filters/hoods?

A: The Moment 77mm Variable Neutral Density 1.8 to 2.7 Filter (6 to 9-Stop) does not have front filter threads.

Q: 5. Is the front thread of 82 mm B+W MRC Nano Master #803 ND0.9 Filter still 82 mm? Can I put on a 82 mm CPL in front of this 82 mm ND filter? Thanks

A: Yes, this B+W MRC Nano Master #803 ND0.9 Filter (82mm) does have a front thread.

Q: 6. Does this come with a protective case for the filter?

A: Yes, the B+W MRC Nano Master #803 ND0.9 Filter (82mm) comes with a drawstring filter pouch for protection.

Q: 7. Does it have front filter threads?

A: The Moment 77mm Variable Neutral Density 1.8 to 2.7 Filter (6 to 9-Stop) does not have front threads. The inner diameter is 85mm; the outer front diameter is 96mm.

Q: 8. Will this fit a Coken P holder (stated as 84mm)?

A: Unfortunately, we cannot guarantee that the LEE Filters 85 x 85mm Little Stopper 1.8 Neutral Density Filter for LEE85 Filter System would fit inside the Cokin P Filter Holder. Cokin P square filters are 84 x 84mm in size, and their rectangular filters are 84 x 100mm in size. I cannot guarantee the extra 1mm width of the LEE Filters 85 x 85mm Little Stopper 1.8 Neutral Density Filter would work in the Cokin P Filter Holder.

Q: 9. Just curious about the image, is this filter that magenta?

A: Haida 77mm NanoPro MC ND 3.0 Filter (10-Stop) is not magenta. That is just a reflection when the photo was taken.

Q: 10. What color aberrations are there?

A: The Moment 67mm Variable Neutral Density 0.6 to 1.5 Filter (2 to 5-Stop) does not exhibit and color aberrations.