One sad little box of 25 sheets from the bottom of the freezer... past dated 1999. Just wondering if anyone has had success with expired HSI 4143. I am reticent to 'just try it' ... 25 sheets does not leave a lot of trial and error latitude. I would appreciate any advice and related actual experience for exposure & film development. I will be shooting floating and shore stranded kelp...
thanks!
I also have one roll of 35 ... I assume it handles the same yes/no?
Haven't shot 4x5 HSI for a while, but I would experiment. Use 3 sheet at your normal exposure and bracket one stop up and down, develop noramally. The film is sealed and frozen could very well be fine.
Tom
I've been shooting HSI from 1999 and older lately. It prints pretty well. Shoot a sheet or two by exposing the darkslide in thirds. Process to get an indication of speed and/or fog levels. Start at 50 asa.
As with other films, plan on some unknown amount of fog due to age. If you shoot at half-speed and pull process you'll be able to use even long-expired stock.
Great to know that I may get some printable images...
Exposing in thirds is a good way to conserve... think I'll take that one step further and cut the film in half for 2 different processing times... thanks!
I've shot expired 35mm IR, and it certainly had base fog. This film was from the 80s, but stored in the freezer. In fact, I still have some more of it...and more recently dated 4x5. This might be obvious, but your bellows needs to be IR light proof. I've blown a couple sheets forgetting to swap out the bellows.
Jay
The thing that usually happens first with old IR film is it loses some or all of it's IR sensitivity. In that case it would look like ordinary B&W negs. If it has a bit of fog, some benzotriazole in the developer will help. Kodak's HC-110 developer is good at holding back some of the fog, too. My guess is it will be usable.
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