The 46mm Formatt Hitech 46mm 9-Stop ND Filteris a solid neutral density filter providing a 9-stop reduction in exposure. This 2.7 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.

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 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.

2.7 Optical Density    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch Resistant    Schott Superwite Glass    SuperSlim 5.5mm-Thick, Stackable Ring    Designed for Solar Photography    Increase Exposure Length    Greater Control Over Exposures    Neutral Results Across All Spectrums    Includes Pouch

ND 2.7 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 9-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 resistant 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. Pls confirm that the 46mm filter will fit in the rear drop-in slot of a Nikon Z 800mm? i.e. it's not too thick

A: The Tiffen Solar ND Filter (46mm, 18-Stop, Special 50th Anniversary Edition) is incompatible with the Nikon NIKKOR Z 800mm f/6.3 VR S Lens. Solar filters must be on the front of the lens to be safe. Get the MrStarGuy Adjustable Objective White Light Solar Filter (145-175mm OD), BH #STSGFT043B.

Q: 2. Does this filter have front threads for attaching a screw-on lens hood? I intend to use it with a 600mm mirror lens.

A: Yes, the Tiffen Solar ND Filter (95mm, 18-Stop, Special 50th Anniversary Edition) has 95mm front threads.

Q: 3. Is this filter blocking infrared and UV rays as well? I read those could damage a camera sensor.

A: Unfortunately, the Tiffen Solar ND Filter (77mm, 18-Stop, Special 50th Anniversary Edition) does not block infrared and UV rays.

Q: 4. Would this be considered a 52mm drop in filter for Nikon lens?

A: The Tiffen Solar ND Filter (52mm, 18-Stop, Special 50th Anniversary Edition) is too thick to work as a drop-in filter.

Q: 5. Will this 43mm solar filter fit these Canon lenses: RF 24-105mm f/4 L IS USM Lens ; RF 100-400mm f/5.6-8 IS USM Lens?

A: The Tiffen Solar ND Filter (43mm, 18-Stop, Special 50th Anniversary Edition) is too small to thread in to both of the lenses mention above. This filter is design to fit a front thread of 43mm only. Your Canon RF 24-105mm f/4 L IS USM Lens has a 77mm front thread while Canon RF 100-400mm f/5.6-8 IS USM Lens has a 67mm front threads. Tiffen makes the same filter in both of size.

Q: 6. Is this filter ISO 12312-2:2015 compliant?

A: No, the Tiffen Solar ND Filter (67mm, 18-Stop, Special 50th Anniversary Edition) is not ISO 12312-2 compliant and therefore not safe for direct viewing of the Sun. The filter, like most on the market, will protect your camera and allows for safe solar photography only. It's advised that you still wear protective eyewear.

Q: 7. Will This Formatt Hitech 6 x 6 clear filter fit a Lee SW150 filter holder?

A: Yes, this Formatt Hitech 6 x 6 Clear Filter is the correct dimensions to fit the LEE Filters SW150 Filter Holder at 6 x 6 (150 x 150 mm).

Q: 8. Is this suitable for solar photography including eclipse photos? The description says so, but there is a contradictory warning

A: This Tiffen Solar ND Filter is suitable for photographing Solar eclipse, the warning is towards the using the filter as glass to look through with your eyes- that's what the warning is about. You shall never use the photo filters for gazing at the Sun or Solar eclips nor looking through the view finder. Most photographers use time-lapse function for shooting Eclipse. For previewing the Sun you can use Solar Binoculars https://www.bhphotovideo.com/c/buy/solar-viewing-binoculars/ci/31714 , for more information please, refer to our Solar Eclipse guide https://www.bhphotovideo.com/explora/photography/tips-and-solutions/8-lessons-learned-when-i-photographed-a-total-solar-eclipse

Q: 9. Is this filter suitable for the upcoming eclipse 10/14/23?

A: The Tiffen Solar ND Filter (95mm, 18-Stop, Special 50th Anniversary Edition) (B&H# TI95CND54) is absolutely suitable for photographing any annular solar eclipse such as the one on October 14, 2023 (and future such annular solar eclipses), as well as any total solar eclipse such as the one on April 8, 2024 -- and later ones, too, in 2026, 2028, etc. As with any similar photography (rather than optical viewing) style filter, the image would then be viewed using electronic means such as in digital live view mode when using a DSLR (rather than using the optical viewfinder) or with any mirrorless camera using its digital viewfinder or rear digital screen.

Q: 10. does it work to photograph the sun and solar eclipses?

A: The Tiffen Solar ND Filter (58mm, 18-Stop, Special 50th Anniversary Edition) is for Solar Photography, Not Safe for Direct Viewing of the Sun. It is not ISO 12312-2 compliant and therefore not safe for direct viewing of the Sun. Always use approved ISO 12312-2 certified safety glasses when viewing the Sun directly.