Exhibiting improved clarity, flatness, and reduced reflectivity, this 127mm Firecrest Ultra ND 1.8 Filter from Formatt Hitech is a 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. Designed using inspiration from their cine Firecrest filters, these Ultra filters receive an additional lapping and polishing process during production to ensure lower reflectivity and improved clarity and sharpness.

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 to 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    SCHOTT Superwite Glass    SuperSlim 5.5mm-Thick, Stackable Ring    Hydrophobic and Scratch Resistant    Darkens Entire Image    Neutral Results Across All Spectrums    Secondary Lapping and Polishing Process

The Firecrest Ultra series filters exhibit greater clarity and have lower reflectivity than the original Firecrest filters. Borrowing from the range of Firecrest cine filters, the Ultra series filters undergo a secondary lapping and polishing process after the initial polishing and bonding stage. This additional step helps to ensure flatness and consistency for improved image quality.

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 resistance 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 is outside diamater? I want to attach a screw in hood.

A: The outside diameter is 62mm.

Q: 2. Made with optical glass? Quality of product?Any suggest what I can purchase in the $100 range?

A: It is a quality product made with multi-coated filter. For the money you can't get a better filter and it's just as good as any other filter under $100.00

Q: 3. is this ND filter ideal for video use? I plan on using it with a Sony FDR-AX33 4K camera.

A: Actually the newest ND filter by Hoya (the SOLAS filter series) would be more suited for video work:https://a href= http://www.bhphotovideo.com/c/product/1285182-REG/hoya_xsl_46irnd09_46mm_solas_0_9_irnd.html target= _blank www.bhphotovideo.com/c/product/1285182-REG/hoya_xsl_46irnd09_46mm_solas_0_9_irnd.html/a

Q: 4. Will this fit my Leica Q? I saw someone say that it wouldnt fit the leica 28mm lens.

A: Yes, the Leica Q takes a 49mm filter, so this will fit.

Q: 5. Will I get vignetting with this filter on a Zeiss 21mm/2.8 ZE lens? Thanks!

A: That lens is just on a full frame camera might give you a tiny bit of vignette. It is on the very edge.I would suggest getting one that is for wide lenses like this,B+W 82mm #102 Neutral Density (ND) 0.6 Multi-Coated (MC) Extra Wide Glass FilterB&H # BW102MC82EW Mfr # 66-1070601http://bhpho.to/1oDK7Mh

Q: 6. is there a filter that cuts reflection of car interior, w camera mounted to window on the inside, shooting out the car window?

A: Best for reflections is using a polarizing filter not an ND. This is some options, https://bhpho.to/46vbdOC.

Q: 7. does this have a front thread to take the 82mm circ. polarizer included in some of the formatt hitech kits?

A: No

Q: 8. Any vignette on a lens with 77mm thread? How is edge distortion?

A: These is no vignetting unless the lens is wider than 28mm. These is no noticeable edge distortion either.

Q: 9. What diameter lens cover will fit over this filter please?

A: The lens cover for your lens should fit over the filter. So if your lens is 95mm, and your filter is 95mm, then you need a 95mm lens cover.

Q: 10. Can you layer this filter with other filters?

A: Yes, but note that this filter has 52mm threads in the rear where it attaches to the lens and 55mm on the front to accept additional filters or a lens cap.