Today, the biggest problem for large film factories which were built for pre-digital demand is the breadth of film selection. Changing out production of one emulsion for another is difficult and costly, so big companies like Kodak, which are accountable to their shareholders, find that the most effective way to cut losses is to offer fewer film types.
In my experience, expired, but well cared for, film is a lot of fun and can yield great results. And, hey, who knows if you'll ever get the chance to try this film ever again?! I got some expired 4x5 sheet film from my friend Pete Eckert. And I can't wait to try it out!
Kodak Tri-X is a classic emulsion but this ISO 320 that expired fourteen years ago may be a little different formula from today's Tri-X. Tri-X has been around since the 1930s in motion picture, 35mm, 120, and sheet formats. The chemistry has changed periodically over time but the name has stayed the same.
Plus X is an ISO 125 panchromatic film. Its origins are similar to Tri-X, beginning around 1938 as a motion picture film, a year later it was offered in still formats. Plus X was discontinued by Kodak in 2011, so it is possible that this is the only Plus X that I will ever have the chance to shoot.
I also picked up a couple rolls of Kodak technical pan in 135 format from Citizens Photo that expired in 1999. This is an extremely slow speed, ultra-high definition film. In fact, there is no speed rating on the box. Jim at Citizens suggested trying it at ISO 25. Some online searching says between ISO 6 and 10. It has extended sensitivity to red. If you want to try it out, I think they have a few rolls left! 36 shots for eight bucks equals less than a quarter per frame.
That film isn't getting any fresher; get out and shoot!