Exhibiting improved clarity, flatness, and reduced reflectivity, this 37mm Hitech Firecrest Ultra ND 37mm 24-Stop Solar Photographyfrom Hitech Firecrest Ultra ND 37mm 24-Stop Solar Photographyis a neutral density filter providing a 24-stop reduction in exposure. This 7.2 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.

7.2 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 7.2 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

This filter provides a 24-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 work with the Sony A7SIII?

A: This filter will work with any lens with a 67mm thread.

Q: 2. Would this filter be good for shooting the moon and planets? Cut down the moons brightness and glare.

A: The Haida 77mm NanoPro One Million X Edition ND Filter (20 Stop) is a solar filter and it would be too dark for lunar use. A 2 stop filter is recommended for lunar photos: https://bhpho.to/48R3cVJ

Q: 3. What color will the sun appear through this filter?

A: The last Image in the Photo's of this Filter show's what the Sun looks like through this Filter.

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. Is there any polarization effect with this filter?

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (82mm) reduces exposure, but there is no polarization effect.

Q: 6. I just bought this filter and I experience something weird. When I turn it over the darker ND dot, the filter seems to go even darker and the photo look like a IR shot (all purple). Yesterday I set the filter at his darker point. I took a photo : f.14, 2.5s, iso 100. Then I turn further the filter and it became darker. So I change the time and I hand to go further as 60sec to get proper expose photo.. but in the viewfinder, it was all purple. Is that normal? I use it on Olympus em10II and 14-42 kit lens

A: The K&F Concept ND2-ND400 Blue Multi-Coated Variable ND Filter (58mm) is only rated to perform properly till 8.6 stops. Going beyond the specified maximum may degrade image quality. Additionally with higher levels of light reduction one runs the risk of IR pollution in the image. As you reduce visible light you are more suspect to this pollution, which could be why you are seeing the strange colors.

Q: 7. 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: 8. Can this be safely used for photographing a Solar Eclipse?

A: I would recommend 17 stops or more for solar eclipse, so I wouldn't recommend the K&F Concept Nano-X Series ND32000 ND Filter (100 x 100mm, 15-Stop) for solar eclipse.

Q: 9. Can I look through my viewfinder with this on?

A: The usual practice to to do all the focusing & framing , Before you put this on, because its way too dark.

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.