The 82mm Formatt Hitech 82mm Firecrest ND Filter 6-Stopis a solid neutral density filter providing a 6-stop reduction in exposure. This 1.8 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.

1.8 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 1.8 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 6-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. What thread pitch has this filter?

A: The Formatt Hitech SuperSlim filters are 5.5mm thin. Nov 30, 2014

Q: 2. 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: 3. Does the 82mm SuperSlim CPL create vignetting on a 16-35GM?

A: It does not.

Q: 4. what is the thread pitch for this filter?

A: The Formatt Hitech SuperSlim filters are 5.5mm thin.

Q: 5. Does this filter have front filter threads? The item listing says this is a stackable filter. I have the 77mm variant and it does have front threads.

A: No front filter threads

Q: 6. Will this stepping ring work with any 46/82 mm lens/ filter combination?

A: It working good with my lens.

Q: 7. Can I use this filter with the Lee polarizer filter holder?

A: It should fit as long as the polarizer filter holder is 105mm in diameter.

Q: 8. 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: 9. Will this filter fit a 39mm drop in filter for a Nikon F4 600 mm lens?

A: No, that filter will not fit in Nikons two versions of the 600mm lens.The two 600mm lenses are the, Nikon AF-S NIKKOR 600mm f/4E FL ED VR Lens B&H # NI6004EEDVR MFR # 20054AndNikon AF-S NIKKOR 600mm f/4G ED VR Lens B&H # NI6004GEDVR MFR # 2173The f/4E uses a 40.5mm drop in and the f/4G uses a 52mm drop in filter.The recommend polarizing filters are below.

Q: 10. What is the weight of this filter?

A: We would guesstimate it to be approximately 1 oz.