Exhibiting improved clarity, flatness, and reduced reflectivity, this 127mm Formatt Hitech Firecrest Ultra ND Filter 127mm 3-Stopfrom Formatt Hitech Firecrest Ultra ND Filter 127mm 3-Stopis a neutral density filter providing a 3-stop reduction in exposure. This 0.9 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.

0.9 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 0.9 filter darkens the image, allowing you to photograph with a longer shutter speed or wider aperture than normally required.

Providing a 3-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. Does it come with a case?

A: Yes. B and W is high quality glass....case included.

Q: 2. 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: 3. Can two of the Hoya 49mm Neutral Density (NDX8) 0.9 be stacked for additional density?

A: Yes you could... but I would not. That is extra glass surface to catch light and cause distortion and reflection. If this was an expensive lens with perfect coatings... what I caution you on would not be an issue. I would not.

Q: 4. Is this filter compatible with a Canon 50mm 1.4?

A: Yes, the Bower 58mm Variable Neutral Density Filter is compatible with the Canon 50mm f/1.4 EF USM lens.

Q: 5. how can I tell what size screw on sense I need for my specific size lenses?

A: The thread pitches are all the same. All you need to do is make sure the diameter of the lens (usually marked on the lens with a number and a circle with a line across it) is the the same is the size filter that you want to fit on it. For example, Nikon 70-200mm have a 77mm fitting so you'll need a filter that is 77mm in size.

Q: 6. What is outside diamater? I want to attach a screw in hood.

A: The outside diameter is 62mm.

Q: 7. Does it come with a case?

A: No sadly it is just a plastic display case.

Q: 8. Are their both inside and outside threads on this filter so that it can be included anywhere in a stack?

A: I note it is threaded on both sides.

Q: 9. Do the stop markings on the filter equal to 1/3 stop?

A: Yes

Q: 10. Can you tell me the difference between these two ND filters?Hoya 55mm Neutral Density (NDX8) 0.9 Filter B&H # HOND8MC55 MFR # A-55ND8X-GBandHoya 55mm Neutral Density (ND) 0.9 Pro 1 Digital Multi-Coated Glass Filter B&H # HOND8P1MC55 MFR # XD55ND8

A: in what respect is the quality "better"?