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Tri-X Expiration Date

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Summer Wind

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Mar 1, 2009, 12:42:48 PM3/1/09
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How long past its expiration date is 35mm Tri-X usable?

Thanks,
SW


Peter Irwin

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Mar 1, 2009, 1:55:09 PM3/1/09
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Summer Wind <summe...@swbell.net> wrote:
> How long past its expiration date is 35mm Tri-X usable?
>
Under good storage conditions, it will be usable for at least
a decade after its expiry date. Good storage means kept in an
air conditioned house in the summer - a few days at 100F will be
rather hard on it - a glove compartment of a car in summer is
the wrong place to store film.

There will be a bit of fog on old film, but with a normal or
generous exposure it won't show on the prints. I wouldn't try pushing
any film that wasn't pretty fresh.

Peter.
--
pir...@ktb.net

Stefan Patric

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Mar 1, 2009, 1:57:12 PM3/1/09
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On Sun, 01 Mar 2009 11:42:48 -0600, Summer Wind wrote:

> How long past its expiration date is 35mm Tri-X usable?

It depends on the environment that it's been stored in.

Frozen? Indefinitely, for all practical purposes.

Refrigerated? Almost, indefinitely, but at least 5 years beyond.

Average Room Temperature? A year or so, before there's any noticeable
change, then only slight at one year. That is, still usable. The
changes will be loss of film speed and decreasing image contrast. If
it's been 5 or more years, it's still usable, but I wouldn't use it for
anything important.

In your car where the temperature inside gets up to 140F in the summer?
It's toast. And has been for years.

You might check Kodak's web site. They used to have info based on actual
tests that covered this.


Stef

Summer Wind

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Mar 1, 2009, 2:00:45 PM3/1/09
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"Stefan Patric" <n...@thisaddress.com> wrote in message
news:cUAql.56919$pX4....@newsfe08.iad...

> On Sun, 01 Mar 2009 11:42:48 -0600, Summer Wind wrote:
>
>
> Average Room Temperature? A year or so, before there's any noticeable
> change, then only slight at one year. That is, still usable. The
> changes will be loss of film speed and decreasing image contrast. If
> it's been 5 or more years, it's still usable, but I wouldn't use it for
> anything important.
>

It's only 2 months past the expiration date and it has been stored in a cool
room, so it sounds like I can consider it like new. Correct?

Thanks for your help.

SW


David Nebenzahl

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Mar 1, 2009, 3:19:55 PM3/1/09
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On 3/1/2009 11:00 AM Summer Wind spake thus:

I would.


--
Any system of knowledge that is capable of listing films in order
of use of the word "fuck" is incapable of writing a good summary
and analysis of the Philippine-American War. And vice-versa.
This is an inviolable rule.

- Matthew White, referring to Wikipedia on his WikiWatch site
(http://users.erols.com/mwhite28/wikiwoo.htm)

Noons

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Mar 2, 2009, 5:12:12 AM3/2/09
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Summer Wind wrote,on my timestamp of 2/03/2009 6:00 AM:

>
> It's only 2 months past the expiration date and it has been stored in a cool
> room, so it sounds like I can consider it like new. Correct?

Right on!

> Thanks for your help.

No worries!

Stormin Mormon

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Mar 2, 2009, 7:20:55 AM3/2/09
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Film expiry date is only estimated. I've used black and
white film that's many years past expiration, and it's been
fine. In about 1985 or so, a friend and I saw some black and
white film for a buck a roll, at a store. We each bought
several rolls, and took pictures for years after that. It
was Kodak film, I can't remember if it was plus X, or tri X.
Probably Plus X, 100 ASA.

--
Christopher A. Young
Learn more about Jesus
www.lds.org
.


"Summer Wind" <summe...@swbell.net> wrote in message
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Bill Graham

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Mar 3, 2009, 2:02:10 AM3/3/09
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"Stefan Patric" <n...@thisaddress.com> wrote in message
news:cUAql.56919$pX4....@newsfe08.iad...
> On Sun, 01 Mar 2009 11:42:48 -0600, Summer Wind wrote:
>
>> How long past its expiration date is 35mm Tri-X usable?
>
> It depends on the environment that it's been stored in.
>
> Frozen? Indefinitely, for all practical purposes.

As was pointed out to me once before on this forum, even freezing the film
won't compensate for damage caused by cosmic radiation, so freezing won't
preserve it "indefinitely".

Stefan Patric

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Mar 3, 2009, 2:35:02 PM3/3/09
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You failed to note that I qualified my statement: "...for all practical
purposes."

And to that person who brought up "cosmic rays".... As a girl friend of
mine so fondly likes to refer to such nit-picky people: "He's so
anal." ;-)


Stef

Dave

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Apr 17, 2009, 6:20:10 PM4/17/09
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Stormin Mormon wrote:
> Film expiry date is only estimated. I've used black and
> white film that's many years past expiration, and it's been
> fine. In about 1985 or so, a friend and I saw some black and
> white film for a buck a roll, at a store. We each bought
> several rolls, and took pictures for years after that. It
> was Kodak film, I can't remember if it was plus X, or tri X.
> Probably Plus X, 100 ASA.
>
At the risk of going off topic, I am wondering if this applies to
Kodachrome as well, since Kodachrome is essentially a black and white
file that gets color added during processing. If not, why not?

Dave

Paul

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Apr 17, 2009, 10:44:53 PM4/17/09
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"Dave" <d...@m.com> wrote in message news:49e90094$0$27763$607e...@cv.net...

In my experience, slides made from outdated Kodachrome tend to have a
magenta tint. I couldn't tell you exactly why.

Paul


Peter Chant

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Apr 18, 2009, 12:31:10 PM4/18/09
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Dave wrote:


> At the risk of going off topic, I am wondering if this applies to
> Kodachrome as well, since Kodachrome is essentially a black and white
> file that gets color added during processing. If not, why not?

I'd worry more about where you can get it processed.

Pete

--
http://www.petezilla.co.uk

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