The 150 x 150 Formatt-Hitech Firecrest ND Filter Kit contains 3 Firecrest ND filters, ranging in density from 1.2 to 1.8 to provide a reduction in exposure from 4 to 6 stops. By darkening the entire image, you can photograph with a wider aperture or slower shutter speed than normally required for greater control over focus, movement, and brightness.

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 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 filters. Each filter in this kit measures 5.9 x 5.9" / 150 x 150mm and is 2mm-thick, making it compatible with the LEE SW-150 Filter Holder.

Includes 3 Firecrest ND Filters    1.2 to 1.8 Optical Density 4 to 6-Stops    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch-Resistant    2mm-Thick Schott Superwite Glass    Greater Control Over Exposures    Increase Exposure Length    Neutral Results Across All Spectrums    Fits LEE SW-150 Filter Holder

Related Questions and Answers

Q: 1. 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: 2. Purchased FirecrestUltra 100x100mm ND 3.0 filter. It came with some self sticking foam gasket in separate bag. There are no instructions how to install the gasket.Question: which side of the filter should the gasket be installed on? One side of the filter has writing on.

A: Put the gasket on the side that does NOT have the writing.

Q: 3. Are the filters stackable?

A: It is stackable. It does have 77 mm front filter thread.

Q: 4. Is this filter a discontinued model? Nobody else has it at this price.

A: As far as I know it is not however, due to the Eclipse event this year, it took about 3 months to arrive. Well worth the wait though, I love it. I have 2 of these, one is a 13 stop and the other is a 16 stop filter. Both top notch quality and you can't beat the price on this site.

Q: 5. Is this filter compatible with the Sigma 8mm f/3.5 EX DG Circular Fisheye lens? In particular, will there be the Vignette effect？

A: I don't know how you plan on attaching it to the lens but if you just hold it in front of the lens, you will get some vignetting that can be adjusted in post. BTW, there is really no other way to use a filter with this lens other than holding it or using the rear gelatin filter holder that takes cut to size gel filters.

Q: 6. Is this kit compatible with the Firecrest 100 mm Holder from Formatt Hitech?

A: The Firecrest filter holder will hold these filters.

Q: 7. Does it have a gasket like the big stopper?

A: No.

Q: 8. Does this filter fit Cokin P holder?

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

Q: 9. In regards to the solar filters, is there any color change to the sun? Is it more yellow/orange, or white like other filters?

A: The Formatt Hitech 105mm Firecrest Ultra ND 6.0 Filter (20-Stop) would render color very similar to what the eye sees. This filter should not be used for directly viewing the sun; always use an approved ISO 12312-2 certified solar filter when observing the Sun through optics or cameras.

Q: 10. 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.