Kodak High Speed Infrared

Kodak High-Speed Infrared film, also known as Kodak HIE, was a popular black-and-white infrared photographic film from Kodak. The film was sensitive to the visible light spectrum (with decreased green sensitivity), infrared radiation up to 900nm in wavelength, and some ultraviolet radiation as well.

The prominent blooming or "glow" often seen in the highlights of infrared photographs is an artifact of HIE and not of infrared light itself (nor even of all IR-sensitive films). This is because conventional photographic films have an anti-halation layer that absorbs scattered light, while HIE lacks this backing. As a result, Kodak HIE (which also had a completely transparent base, whereas most films have slightly gray bases) had to be loaded and unloaded in total darkness. Light can enter the film through the tail protruding from a 35mm canister and without a gray base it will be piped into the film and expose it; without an anti-halation layer any light entering the substrate through the emulsion will be reflected back and forth inside the film, becoming diffuse as it travels and causing halation. Nonetheless, HIE was produced without a gray base and anti-halation layers so that sensitivity would be increased by allowing light to reflect back and forth, and because it was difficult to find any way of treating the film that would be effective at infrared wavelengths.

Specifications

- Brand: Kodak

- Film Format: 35mm

- Film type: B&W Negative Film

- ISO: -

- Expiry date: ?

We can't give any guarantees on expired film. Some of the film have been stored in the fridge and some have not. 

DutchFilmShooters stores it cold from arrival to shipment.

You should keep in mind that the film might need more light than usual because it is expired. The general rule for expired film is: 'for every 10 years, add 1 stop of light'. 

You don't have to follow this rule for slide film. Just shoot at box speed.