Expiration Dates?

[john grunke]

Does anyone have any info. regarding how expiration dates are

established. Recently my trusty photo shop was out of my

standard choice of 4x5 and offered up some out of date for 1/2

the price. After testing on a shoot that I could easily

reshoot if, Heaven forbid, it was bad stuff. The results

looked great for film that was $60 less than normal price.

By the way I was using 40m20y for 6min.@f32 under flourscents

to be scanned and shopped for the web. So I am obligated to

give the absolute best starting trans possible.

What does age of film affect first, affect most?

Hummmm! now where is that spellchcek button?

Can 10yr old film that was stored properly give satisfactory

results for 8x10 contacts, for enlargments?

Yes I'm planning many try it&sees........

[kcrisp]

John: It depends, in my experience. Freezing vs. refrigerating

makes a big difference with B&W film. Frozen, I've had film that

expired 12 years or more ago (i.e., purchased 14 years before

expiration) and it was fine. Refrigeration helps but isn't as

effective as preventing fogging. Color film is another story. With

transparency material even if frozen going even 12 months past the

use date has provided unsatisfactory results. How many hours of your

time are worth risking for the sake of the 1/2 off savings?

[upscan]

Kevin: that has not been my experience with colour film. I have Fuji

and Kodak transparency and negative film frozen in a deep freezer

that I tested after about 6 years in the freezer and it was like

new. It is of utmost importance however never to open the film from

its sealed plastic foil before freezing. Once opened it can not be

frozen.

[armin_seeholzer]

Hi John

 

<p>

 

Same expirience like Julio but I have it at about 3 years only with not

any problem.And it works for a while also with B/W infrared.

[kcrisp]

My biggest disappointment was with Velvia that had been frozen,

perhaps this is not representative.