The 127mm Formatt Hitech 127mm 3-Stop ND Filteris a solid neutral density filter providing a 3-stop reduction in exposure. This 0.9 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.

0.9 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 0.9 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 3-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 kit compatible with the Firecrest 100 mm Holder from Formatt Hitech?

A: The Firecrest filter holder will hold these filters.

Q: 2. 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: 3. Will there be any color shifting in the image?

A: All ND's and particularly variable ND's can have some color shift, especially as you go darker. Since it depends on the camera, the lens, the f/stop, the light and the photographer, we cannot say for sure if you will experience color shift. Since Formatt Hitech is a well regarded company, it is our feeling that your time with the filter will likely be positive.

Q: 4. Does the ring physically stop at min and max ends, or does it just spin all the way around?

A: The Formatt Hitech 72mm Multistop Variable Neutral Density Filter ring does not physically stop at min, or max. It does just spin around.

Q: 5. I see that this filter has front threads. Will they securely hold my Canon lens cap?

A: Yes, the filter's front threads will hold your lens cap securely.

Q: 6. 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: 7. 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: 8. 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: 9. How much is this thick? 2mm, 4mm or 5mm?

A: The Formatt Hitech 4x4 UV-Haze 2B Filter thickness is listed as 0.16 (4 mm).

Q: 10. When open, are the pockets arranged 6 by 1 or 3 by 2?

A: When I bought the 6 filter wallet about a year ago it was 3 x 2, but judging by the pic I am now seeing above it would be 6 x 1, as the one pictured above is half as wide as mine.