The 150 x 170mm Formatt Hitech Firecrest ND Filter Kit 150x170mmcontains 4 Firecrest graduated ND filters, ranging in density from 0.3 to 1.2 to provide a selective reduction in exposure from 1 to 4 stops. Graduated neutral density filters help to darken specific areas of an image, such as bright skies, while allowing for a normal, unaffected exposure in other regions of the image. The ND effect is densest at the edge and taper to clear by the middle, with a soft-edged line of transition between the density and the clear areas. These filters are designed to be used in the vertical orientation as the line of transition runs parallel to the short side of the filter.

The design of these filters 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. These filters provide 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 filters. Each filter in this kit measures 5.9 x 6.7" / 150 x 170mm and is 2mm thick, making it compatible with the LEE SW-150 Filter Holder.

Includes 4 Firecrest Grad ND Filters    0.3 to 1.2 Optical Density 1 to 4 Stops    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch Resistant    2mm-Thick Schott Superwite Glass    Reduce Exposure in Selective Areas    Soft-Edge Vertical Grad    Neutral Results Across All Spectrums    Fits LEE SW-150 Filter Holder

Related Questions and Answers

Q: 1. Could you please tell me, if this filter be compatible with 7artisans Photoelectric 60mm f/2.8 Macro Lens for Micro Four Thirds? Thank you!

A: As the 7artisans Photoelectric 60mm f/2.8 Macro Lens for Micro Four Thirds has 39mm filter threads, yes, the Formatt Hitech 39mm Firecrest SuperSlim UV 370nm Filter would be compatible for use on the 7artisans Photoelectric 60mm f/2.8 Macro Lens.

Q: 2. Will this work without vignetting with a 14mm Fuji lens that equals 21mm in full frame?

A: There should not be any vignetting, but this will still depend on the exact lens you are using. For further assistance with this question feel free to email askbh@bandh.com.

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

A: It does not.

Q: 4. There will be vignetting when used with Zeiss Distagon 15mm?

A: This filter will not vignette nor will that lens.

Q: 5. 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: 6. What thread pitch has this filter?

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

Q: 7. 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: 8. It says usually ships in 2 to 3 days, also says out of stock. will it shop in 2 to 3 days or not?

A: Add the item to the cart online to calculate shipping to your address. For up to date stock questions you can email sales@bhphoto.com

Q: 9. 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: 10. 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.