Tis 85 x 110 Formatt-Hitech Firecrest Soft-Edge Graduated ND Filter helps to darken specific areas of an image, such as bright skies, while allowing for a normal, unaffected exposure in the other regions of the image. The filter is densest at the edge and tapers to clear by the middle, with a soft-edge line of transition between the density and clear areas. Neutral density filters do not affect the coloration of the image and the 0.9 density provides a 3-stop reduction in light from entering the lens.

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 multi-coating, which helps to minimize reflections and flare in order maintain truer colors and contrast. The multi-coating is also scratch-resistant and hydrophobic to benefit the overall durability of the filter. This filter measures 3.3 x 4.3" / 85 x 110mm and is 0.08" / 2mm-thick, making it compatible with the 85 Filter Holder. Its vertical orientation indicates that the density's line of transition runs parallel to the short side of the filter.

0.9 Optical Density    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch-Resistant    2mm-Thick Schott Superwite Glass    Fits 85 Filter Holder    Reduce Exposure in Selective Areas    Neutral Results Across All Spectrums

Graduated ND 0.9 filter for darkening skies and other bright areas of the image.

Provides a 3 stop reduction in light in selective areas.

Soft-edge transition is ideal for circumstances there is not a distinct line of separation between the bright and dark zones of the image.

A vertical orientation filter's line of transition runs parallel to the short side of the filter.

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 multi-coating is water- and scratch-resistance for greater overall durability.

Schott Superwite glass promotes maintained image clarity and its 2mm-thick design is compatible with the 85 Holder.

Related Questions and Answers

Q: 1. Does this filter have front filter threads to stack another filter?

A: yes there is a thread on front to stack more filters

Q: 2. Does this filter fit Cokin P holder?

A: Yes, it will fit either the Formatt Hitech or Cokin P Series filter holder.

Q: 3. is this the same as firecrest irnd filter? I have firecrest irnd filter now and is looking for another one.

A: This filter is an IRND filter from the Firecrest Series.

Q: 4. Does this filter fit Cokin P holder?

A: Yes, you'll need the adapter ring for the P holder, but it does work with either the Formatt-Hitech or Cokin P Filter Holders.

Q: 5. Will these Formatt 46mm Firecrest Ultras fit the Z800 mm as screw in filters?

A: The Nikon 52mm Circular Polarizer (C-PL3L) Glass Filter compatible with the Nikon NIKKOR Z 800mm f/6.3 VR S Lens does not allow the 46 mm polarizing filter to come off and to be changed with another filter so this Formatt Hitech 46mm Firecrest Ultra ND 0.9 Filter can't be used.

Q: 6. What is the weight of this filter?

A: I dont know.

Q: 7. Can this filter be used to good effect other than sunrise and sunset?

A: You could use it whenever you have a very bright light source of light in the frame. This would tame some of that brightness.

Q: 8. Does it have a gasket like the big stopper?

A: No.

Q: 9. Will this work with the smallrig Lightweight Matte Box? I see many people saying 100x100mm are incompatible but they say 4x4 inch are... confusing or what??

A: The Formatt Hitech 100 x 100mm Firecrest Ultra ND 0.9 Filter (3-Stop) is incompatible with the SmallRig Lightweight Carbon Fiber Matte Box because the filter trays on the matte box support 4mm thick filters, and the Formatt Hitech filter is 2mm thick.

Q: 10. How's the vignetting when shooting wide open? Do you have to crop any?

A: I use the the filter ONLY on my Canon 24mm TS-E... and I have not had any issues on any of my images from using this filter. As the old saying goes... you get what you pay for... so, if you're using sub-par glass using an expensive filter, EXPECT sub-par results... no matter the type of filter you use!