The 4 x 5.65" Formatt Hitech Ultra Cinema ND Filter 4x5.65 4-Stopfrom Formatt Hitech Ultra Cinema ND Filter 4x5.65 4-Stopuses a rare Earth-mineral coating to create exceedingly neutral NDs. Soft-edge grads are versatile filters used to balance the luminosity of a bright sky with the terrain below. The soft edge makes it easy to place the filter in the scene, especially over undulating horizons (such as mountains). The filters are made from 4mm-thick Schott Superwite glass, and the multicoating is bonded in the middle to increase scratch resistance. Firecrest Filters are neutral across all spectrums, including UV, visible, and infrared.

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

4mm Cine Firecrest Ultra IRND have the same features of the popular 4mm Cine Firecrest ND. The 4mm Firecrest ND and 4mm Firecrest Ultra IRND both have identical optical performance with the engraving being the only difference.

1.2 Optical Density    Rare Earth Metal IRND Coating    4mm-Thick Schott Superwite Glass    Scratch and Water Resistant    Antireflective Edge Seal    Reduces Exposure in Select Areas    Lap and Polish Manufacturing Technique

Related Questions and Answers

Q: 1. 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: 2. What is the difference between the Cinema FS ND filter and the Nano IRND filter besides the latter being a lot cheaper?

A: The NiSi Full Spectrum Cinema FS ND Filter (4 x 5.65", 1-Stop) is able to transmit light evenly throughout the entire spectrum of ultraviolet, visible light, and near-infrared wavelengths. As a result, this filter is able to produce perfect neutral colors and retain fine granular detail without compromising other aspects of optical performance. Additionally, this NiSi filter is ideal to reduce IR pollution and great for cameras that don't have an IR filter built in.

Q: 3. Can you stack a B+W circular polarizing filter in front of this ND filter?

A: It is possible, but highly not recommended.

Q: 4. Will this filter work with both a 58mm tele lens and 18mm wide lens?

A: This filters can work with any lens that has a 67mm front thread. However, you may experience vignetting on wider lenses.

Q: 5. What is the thickness of the 77mm Digital HT (High Transmission) Circular Polarizing Multi-Coated Filter by Tiffen? I plan to use it on a 17MM lens and want to make sure there is no vignetting.

A: The Tiffen 77mm Digital HT (High Transmission) Circular Polarizing is about 3mm thick.

Q: 6. 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: 7. 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: 8. The specs say 101.6 x 101.6 mm. Will these fit in a 100mm filter holder?

A: Yes, these will fit in a 100mm filter holder.

Q: 9. What’s the transmission value of this filter? Thanks

A: Filter Factor 2.3x (1.2-Stop) to 2.8x (1.5-Stop)

Q: 10. Is this a single coated or non-coated filter?

A: The filter is single coated.