Ideal for solar photography, this 4 x 4" Formatt Hitech Firecrest Ultra Cinema ND Filter 4x4 8-Stopfrom Formatt Hitech Firecrest Ultra Cinema ND Filter 4x4 8-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    2.4 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 have the option to not use any ND, while keeping the filter in the adapter to avoid dust seeping into the hole?

A: You will need to add this clear filter to the drop in filter slot in the Canon EF RF filter adapter. This filter will make sure no dust gets in the camera. https://www.bhphotovideo.com/c/product/1434115-REG/canon_3444c001_drop_in_clear_filter_a.html

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. 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: 4. will this fit the Sigma 17-50mm f/2.8 EX DC OS HSM Zoom Lens for Canon DSLRs with APS-C Sensors?

A: YES IT WILL FIT.

Q: 5. 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: 6. Does this have hard stops?

A: Hello Michael, The Variable ND Filter does not have hard stops. The nature of this type of filter will not have incremental hard stops, and the MIN and MAX marks on the rings are used as a guide.

Q: 7. I have Nikon 16-35mm len. I heard someone indicated that this len may cause flare. Can I attach my 77mm len hood to my wide-angle len first and then attach this ND len on the wide-angle len???

A: Not really. The Eclipse should be attached to the Wide Angle lens and then attach the Fader Hood. The hood should reduce the chance of flare.

Q: 8. 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: 9. Does it fit the Cokin P series holder?

A: Yes the Cokin P-series holder fits 84 mm and 85 mm filters.

Q: 10. Can you tell by feel, like a notch or something when you rotate for densities with is filter...If not which one has that you would recommend w/o breaking the bank to much?... Thanks in advance..

A: There are no notches or clicks as you rotate the filter. Rotation is smooth. I haven't used the filter in a large number of instances yet, but other reviewers have spoken highly of the lack of color shift. It is a hunk of glass, well built and most likely worth the investment. I chose it as a middle cost point with satisfied users.