The 46mm Formatt-Hitech Firecrest ND Filter is a solid neutral density filter providing an 8-stop reduction in exposure. This 2.4 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.

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.

2.4 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 2.4 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing an 8-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. Do they fit the SmallRig's Lightweight Carbon Fiber Matte Box?

A: Yes, those filters should work in the SmallRig Lightweight Carbon Fiber Matte Box.

Q: 2. What comes in the box? The description provided by B&H is limited.

A: The Formatt Hitech 100mm Graduated Neutral Density Kit 6 comes with the three (3) filters listed under the In The Box tab on the kit's webpage, which include the Formatt Hitech 4 x 4 Soft-Edge 0.3 Graduated Neutral Density Glass Filter, B&H # FOGND.3S44, the Formatt Hitech 4 x 4 Soft-Edge 0.6 Graduated Neutral Density Glass Filter, B&H # FOGND.6S44, and the Formatt Hitech 4 x 4 Soft-Edge 0.9 Graduated Neutral Density Glass Filter, B&H # FOGND.9S44. The filters are designed to fit 4 x 4 /100mm x 100mm filter holders, such as the Formatt Hitech 100mm Aluminum Modular Filter Holder, B&H # FOHTAMHS, or the Cokin Z-PRO Filter Holder (Requires Adapter Ring), B&H # COFHZP. However, as indicated under the In The Box tab, only the three (3) filters are included in the filter kit. You would have to purchase the filter holder and adapter ring for your lens separately, as nothing but the filters are included in the filter kit.

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. Is there a ND filter I can used with a 10-24mm lens that does not band or vignette? for a Tamron SP 10-24 77mm

A: This ND filter is optimized for use with wide angle lenses, so vignetting will be kept to a minimum, if there is any at all.

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 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: 7. 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: 8. Do these filters come with individual pouches?

A: The filters are wrapped individual but they do not come with individual pouches for each one.

Q: 9. 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: 10. Does this have hard stops?

A: No.