Tis 150 x 170 Formatt Hitech 5-Stop Graduated ND Filter 150x170helps 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 1.5 density provides a 5-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 5.9 x 6.7" / 150 x 170mm and is 0.08" / 2mm-thick, making it compatible with the LEE SW-150 Filter Holder. Its vertical orientation indicates that the density's line of transition runs parallel to the short side of the filter.

1.5 Optical Density    15-Layer Coating on Outside of Filter    Hydrophobic and Scratch-Resistant    2mm-Thick Schott Superwite Glass    Fits LEE SW-150 Filter Holder    Reduce Exposure in Selective Areas    Neutral Results Across All Spectrums

Graduated ND 1.5 filter for darkening skies and other bright areas of the image.

Provides a 5 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 LEE SW-150 Holder.

Related Questions and Answers

Q: 1. Does this have hard stops?

A: No.

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. Is this filter rated as a solar filter suitable for photographing the sun?

A: Formatt Hitech 105mm Firecrest Ultra ND 5.4 Filter (18-Stop) does not have an ISO rating for safe solar viewing. It may work for a camera as it is not sensitive as human eyes, but if you want to be 100% safe I would recommend looking for a filter that is listed with an ISO rating for safe solar viewing.

Q: 4. Will these work on the lee holder system??

A: Yes you could use these with a 100mm Lee holder https://bhpho.to/2QqpVki.

Q: 5. will these filters fit a Sinar filter holder? would be using on a large format camera with a Nikor 90mm and and Nikor 210mm lens.

A: If you have a Sinar 100 x 100mm filter holder, these filters can fit.

Q: 6. Does this filter come in a case?

A: No it doesnt!I boughta href= http://www.bhphotovideo.com/c/product/212303-REG/B_W_65024717_E1_Filter_Pouch.html target= _blank http://www.bhphotovideo.com/c/product/212303-REG/B_W_65024717_E1_Filter_Pouch.html/aAnd its suitable.Mika from Finland

Q: 7. By the picture, this filter looks like it is graduated. Is it in fact built with a graduation in it?

A: Hi! No, this is not a grad ND filter. It must simply be the marketing photograph. I assure you that this is a solid ND filter.

Q: 8. Is this kit compatible with the Firecrest 100 mm Holder from Formatt Hitech?

A: The Firecrest filter holder will hold these filters.

Q: 9. 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: 10. 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.