Ideal for solar photography, this 4 x 4" Formatt Hitech Firecrest Ultra Cinema ND Filter 4x4 9-Stopfrom Formatt Hitech Firecrest Ultra Cinema ND Filter 4x4 9-Stopuses a rare earth mineral coating to create exceedingly neutral NDs. The filter is made from 4mm thick Schott Superwite glass, with a multicoating that is bonded in the middle to increase scratch resistance. Firecrest filters are neutral across all spectrums, including UV, visible, and infrared.

Firecrest Ultra IRND is a carbon-based filter with hyper-neutral color balance. It can be used for uniform near infrared filtration allowing your camera's color science to remain untouched. The Ultra IRND is equally compatible with ARRI, RED, Blackmagic Design, Canon, Panasonic, and other modern digital cinema cameras. This filter allows the image to be captured as the manufacturer intended.

4mm Cine Firecrest Ultra IRND have the same features as the popular 4mm Cine Firecrest ND. Firecrest Cine filters were renamed in 2019 to match the Ultra photography filters which received a new lap and polish manufacturing technique. For cinema sizes, the 4mm Firecrest ND were always lapped and polished where the 2mm photography versions were not. 4mm Firecrest ND and 4mm Firecrest Ultra IRND both have identical optical performance with the engraving being the only difference.

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.

For Solar Photography    2.7 Optical Density    Rare Earth Metal IRND Coating    4mm Schott Superwite Glass    Scratch and Water Resistant    Darkens Entire Image    Antireflective Edge Seal    Lap and Polish Manufacturing Technique

Related Questions and Answers

Q: 1. Does this ND fader have circular or linear polarizing?

A: Hello David, we have used Circular Polarisers inside the ND Fader.

Q: 2. are these IRND?

A: These filters would simply be ND filters. They are not IRND filters. Though, we do carry two Formatt Hitech 150 x 150mm ProStop IRND Three Filter Kits.

Q: 3. What is the diameter of the round glass filter in millimeters?

A: The NiSi Cinema True Color 1-5 Stop Variable Neutral Density Filter for C5 Matte Box can be used with 95mm cinema lenses and lenses with filter threads up to 82mm.

Q: 4. Does the variable ND drop in filter fit in the Canon ef -R 0.71 speed booster?

A: No, the Canon Mount Adapter EF-EOS R 0.71x (seen here: https://bhpho.to/3OmrCw5) does not accept the Canon Drop-in Variable ND Filter A.

Q: 5. Is this a single coated or non-coated filter?

A: The filter is single coated.

Q: 6. can you add another B&W filter on top of this one?

A: Yes, although depending on your focal length you will start to see vignetting and potentially the edge of the filter in the corners of the frame. This will be especially true at wider angles and with more filters stacked.

Q: 7. Does the wheel have stops indicators? Or do we have to guess what stop we are at.

A: The NiSi Cinema True Color 1-5 Stop Variable Neutral Density Filter for C5 Matte Box (1 to 5-Stop) does not have stop indicators.

Q: 8. Hi Wanted to know Does it work to look at Sun . To check sun position?

A: No, it's not safe to use a 6 stop ND filter like the NiSi Cinema Variable ND Viewing Filter with Lanyard to directly view the sun, as ND filters are not made for a human eye, and would not protect your eyes properly from the sun's UV rays.

Q: 9. Does it fits a 4"x4" Matte Box from another brand?

A: Yes, the NiSi Cinema True Color 1-5 Stop Variable Neutral Density Filter for C5 Matte Box is made for the C5 Matte Box, which takes both 4x4 and 4x5.65" filters.

Q: 10. I current have 55mm F-Pro Kaesemann High Transmission Circular Polarize MRC Filter, can I stack this ND filter on top of the current Polarize filer ?

A: yes you can stack , I would not recommend it