The 127mm Formatt Hitech 127mm 7-Stop ND Filteris a solid neutral density filter providing a 7-stop reduction in exposure. This 2.1 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.

2.1 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 2.1 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 7-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. Is this compatible with the Smallrig Startrail MatteBox??

A: The SmallRig Star-Trail Lightweight Multifunctional Modular Matte Box is not listed as compatible with the Formatt Hitech Filter Tray for Firecrest Ultra Cine Superslim.

Q: 2. Does the IR cut cause vignetting on wide angle lenses? I'd like to use this on the Tokina 11-20mm.

A: You may get some vignetting on the wide end.

Q: 3. What comes with this kit to store and protect these filters? Do they have individual pouches, or an accordion pouch, or are they just bare and you have to buy pouches for them as an extra purchase?

A: There are no protective pouches or cases included with the Formatt Hitech Firecrest Ultra Cine Superslim IRND 3 Filter Kit.

Q: 4. What size lens cap would I need to go in front of this?

A: The Formatt Hitech 77mm Multistop Neutral Density Filter does not have front filter threads and will not accept a standard lens cap.

Q: 5. Do these fit okay in matte boxes that don't use tray slots I.e. wooden camera zip box pro. Worried there might be some play because of 2mm thickness instead of 4mm

A: We would not recommend using the Formatt Hitech Firecrest Ultra Cine Superslim IRND 5 Filter Kit with matte boxes that don't have filter tray slots, as you mentioned, their thinner design can cause issues if they are used without a filter tray.

Q: 6. I'm wondering what the "stop" range on this filter is?

A: The Formatt Hitech 62mm Firecrest SuperSlim Circular Polarizer Filter, B&H # FOFCSSCP62, has a filter factor of 2.5, which would reduce 1.3 stops from your normal exposure.

Q: 7. Can you stack the filters. Or dos the color get to strong?

A: It may be possible to stack filters, but it's not recommended--stacking introduces more surfaces that can reflect light and more unwanted color cast possibilities.

Q: 8. What are the dimensions of the product closed with filters?

A: The thickness of the filters can be different so that is a variable.The width and length is approximately when folded, 175mm x 90mm.

Q: 9. Will this work with regular round 77mm filters as well? I would like to put square filters and round filters in the same wallet. Thanks.

A: I would not recommend using round filters in this wallet, as the sleeves are a bit too thin, and may rip.This wallet would also make a good low-cost addition to your camera bag:Tiffen Cordura Six Filter PouchB&H # TIFP6 Mfr # CORD6

Q: 10. Where can we buy a 0.3 filter? And also, how can we buy additional filter trays?

A: Unfortunately, we currently do not carry or special order the 0.3 / 1-stop filter (manufacturer code FCUCS4x5ND0.3) at the moment; the other Ultra Cine Superslim IRND filters are available as special order items through Firecrest. We do sell additional filter trays separately here: https://bhpho.to/3bvQXp1