Exhibiting improved clarity, flatness, and reduced reflectivity, this 67mm Firecrest Ultra ND for Solar Photography from Formatt Hitech is a neutral density filter providing a 18-stop reduction in exposure. This 5.4 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.

5.4 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 5.4 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

This filter provides a 18-stop exposure reduction, allowing 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 multi-coating 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. 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: 2. What size filter will fit a Leica Ultravid 12x50 HD binoculars? Thanks.

A: The Leica Ultravid 12x50 HD do not have a standardized filter thread.

Q: 3. Is this filter ISO 12312-2 certified?

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

Q: 4. Will this fit over a 67 mm B&W ND filter on my lens or do I need to remove the ND filter first. Also, will a 67mm lens cap fit on this Syrp ND filter?

A: If your existing filter has 67mm front filter threads, you can attach a Syrp 67mm Variable Neutral Density Filter to it. It isn't recommended to use more than one ND filter at a time, however. You can attach a 67mm lens cap to this filter.

Q: 5. Can anyone confirmed which version this is? B&H photos show the stop indicators on the side as being lines, but reviews show the indicators being actual numbers.

A: that is an older photo, yes it has numbers.

Q: 6. What size is the front filter thread?

A: 7artisans Photoelectric 82mm 8-Stop Variable ND Filter does not have front threads. You can not stack another filter or cap on top of this ND.

Q: 7. I've read and heard online that this filter effectively cuts some measure of IR. How true is this?

A: Syrp does not list any specifications on IR transmittance. Without a listed specification, this is subject to product variance. It is impossible to guarantee a specific IR attenuation.

Q: 8. What size Push-On lens cap do I need for this filter? The frame of the filter seems to be larger than 82mm

A: If you are planning on keeping the step ring on while you shooting yes you will have to buy an 82mm cap

Q: 9. Is this filter safe for solar eclipse photography?

A: Haida 95mm NanoPro One Million X Edition ND Filter (20 Stop) BH #HAHD460795 is not rated for solar photography no.

Q: 10. Hello, given that this product's filter factor is 1,000,000; does this imply ND20 and is this appropriate for solar photography?(e.g solar eclipse) the price seems fairly low for such high filtering power.

A: Yup! Indeed, this is a 20-stop filter. Perfect for solar photography!