Archived posting to the Leica Users Group, 2015/10/02

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Subject: [Leica] FS: Film from the freezer
From: kenlass904 at gmail.com (Kenneth Lassiter)
Date: Fri, 2 Oct 2015 10:02:30 -0400
References: <CADtMfuwCgFyRVA78pUmwMNbfdNg5Oynmg0GUJ3N-m1faFerarg@mail.gmail.com> <CAF8hL-HXvVU7f2d1uYyiHac6tt13Ep4wDMU=a0vy6VoyfGoj_w@mail.gmail.com> <560DE996.7000608@csdco.com>

Hello, John:

As the former Director of Publications for Kodak, I am well aware of
radiation.  The P3200 T-Max film could not be stored for long at all unless
it was in a salt mine.  That is where Kodak stored master rolls until ready
for packaging and shipping.

...Ken

On 1 October 2015 at 22:19, John Nebel <john.nebel at csdco.com> wrote:

> In 20 years, cosmic rays may have slightly fogged the ASA 400 film, be
> interesting to see.  Worth a go anyway.
>
> "Ambient Background Radiation (Effects on Raw Stock
> Ambient gamma radiation is composed of two sources: a low energy component
> which arises from the decay of radionuclides and a high energy component
> which is the product of the interaction of cosmic rays with the earth's
> upper atmosphere. The radionuclides responsible for the low-energy photons
> exist in soil and rock and are carried into earth derived building
> materials such as concrete. Lead shielding or storage deep underground may
> be helpful, but for long-term raw stock storage, radiation will still be a
> factor. Upon exposure to ambient-background radiation, photographic
> materials can exhibit an increase in minimum density, a loss in contrast
> and speed in the toe, and an increase in granularity.
>
> The change in film performance is determined by several factors, such as
> the film speed and length of time exposed to the radiation before the film
> is processed. A film with an Exposure Index (El) of 500 can exhibit about
> three times the change in performance as a film with an El of 125. While
> this effect on a film product isn't immediate, we still suggest exposing
> and processing the film soon after purchase. We recommend a period of no
> more than six months from the time of film purchase before exposure and
> processing, provided it has been kept under specified conditions. Films
> kept for extended periods beyond six months may be affected, especially the
> faster films, even if they have been frozen. The only way to determine the
> specific effect of ambient-background radiation is to make actual tests or
> measurements by placing a detector in the location where the film is
> stored. The most obvious clue is the observance of increased granularity,
> especially in the light areas of the scene."
>
> <
> http://motion.kodak.com/motion/Support/Technical_Information/Storage/storage_info.htm#radiation#ixzz3nNB04BHX
> >
>
>
>
>
> On 10/1/15 6:07 PM, Richard Man wrote:
>
>> Ken, I will take them.Please send paypal/address info.
>>
>> Thanks
>>
>> On Thu, Oct 1, 2015 at 10:13 AM, Kenneth Lassiter <kenlass904 at 
>> gmail.com>
>> wrote:
>>
>> As part of my downsizing, I must remove my stash of film from the freezer.
>>> Thi sfilm was fresh when it was put into the freezer 20 years ago. It
>>> should be perfect when warmed to room temperature.  It has been stored in
>>> the plastic cans inside freezer bags inside a large plastic container and
>>> always in the freezer.
>>>
>>> Price REDUCED:US$60 for the lot of 115 rolls including shipping in the
>>> USA.
>>>
>>> OR US$0.75/roll plus shipping.
>>>
>>> *# Rolls*
>>>
>>> *Film*
>>>
>>> *135-36 exp*
>>>
>>> *135-24 exp*
>>>
>>> 25
>>>
>>> Ektachrome 200 Daylight
>>>
>>> X
>>>
>>>
>>>
>>> 26
>>>
>>> Ektachrome 100 VS
>>>
>>> X
>>>
>>>
>>>
>>> 15
>>>
>>> Fuji 100 Daylight slide film
>>>
>>> X
>>>
>>>
>>>
>>> 7
>>>
>>> Fuji 400 Provia
>>>
>>> X
>>>
>>>
>>>
>>> 4
>>>
>>> Ilford Delta B/W
>>>
>>>
>>>
>>> X
>>>
>>> 7
>>>
>>> Kodak Supra 100 Color Neg
>>>
>>> X
>>>
>>>
>>>
>>> 5
>>>
>>> T-max 400
>>>
>>> X
>>>
>>>
>>>
>>> 8
>>>
>>> Fuji Sensia 200 slidefilm
>>>
>>>
>>>
>>> X
>>>
>>> 5
>>>
>>> Kodak Porta 400 NC
>>>
>>> X
>>>
>>>
>>>
>>> 4
>>>
>>> Kodacolor Gold 200 Color Neg
>>>
>>>
>>>
>>> X
>>>
>>> 1
>>>
>>> Kodak IR Ektachrome Prof
>>>
>>> X
>>>
>>>
>>>
>>> 3
>>>
>>> Kodak Max 400 color neg
>>>
>>>
>>>
>>> X
>>>
>>> 10
>>>
>>> Misc mixed single rolls
>>>
>>> X
>>>
>>> X
>>>
>>> *115*
>>>
>>> *Total rolls*
>>>
>>>
>>>
>>>
>>>
>>> Ken Lassiter
>>> kenlass904 at gmail.com  OR 561-247-7725
>>>
>>> _______________________________________________
>>> Leica Users Group.
>>> See http://leica-users.org/mailman/listinfo/lug for more information
>>>
>>>
>>
>>
>>
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
>


In reply to: Message from kenlass904 at gmail.com (Kenneth Lassiter) ([Leica] FS: Film from the freezer)
Message from richard at richardmanphoto.com (Richard Man) ([Leica] FS: Film from the freezer)
Message from john.nebel at csdco.com (John Nebel) ([Leica] FS: Film from the freezer)