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Next: Your opinion is sought...
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External
Since: Apr 04, 2009
Posts: 2
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(Msg. 31) Posted: Sun Apr 05, 2009 4:26 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: rec>photo>equipment>medium-format (more info?)
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Andrew Price wrote:
> On Sat, 4 Apr 2009 18:52:20 +0000 (UTC), "Geoffrey S. Mendelson"
> As cosmic radiation will affect film wherever it's kept, and if it's
> only colour shifting which is slowed by freezing, does that mean there
> is no point in keeping b/w film in the freezer at all? (serious
> question, I need the space in my freezer!)
There is some fogging from age, but I have never heard of it being much,
as in 10 to 20 year old black and white film still being usable. There is
also some deterioration in speed, but depending upon how you process your
film, it may not be a problem.
What I can't even speculate on to answer you question is how hot does your
storage area get? If you have a root cellar or a cool basement, where it never
goes above 70f, it will last a lot longer than in an attic where it can go
over 100F in many places.
As a guess, I would say that if you plan to use it in the next 5 years,
and it does not get extremely hot, don't bother to refrigerate it.
5 to 10 years keep in the refrigerator and more than 10 years in the freezer.
This is assuming some loss in speed,and contrast due to fogging is not
critical. So if you are keeping it for astrophotgraphy, the freezer is it,
while if it's just non critical snaps, don't bother.
Geoff.
--
Geoffrey S. Mendelson, Jerusalem, Israel gsm DeleteThis @mendelson.com N3OWJ/4X1GM |
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External
Since: Mar 01, 2004
Posts: 206
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(Msg. 32) Posted: Mon Apr 06, 2009 3:26 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Sun, 5 Apr 2009 14:58:52 -0700, "Richard Knoppow"
wrote:
[---]
> Because it is mostly a chemical process fogging is
>slowed substantially by storing sensitive materials at low
>temperatures. Freezing works fine provided its done
>correctly so that ice crystals do not form in the emulsion.
Many thanks to Richard and Geoffrey for the comprehensive answers to
my question. |
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External
Since: Sep 28, 2006
Posts: 9
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(Msg. 33) Posted: Wed Apr 08, 2009 7:19 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Toni Nikkanen" wrote in message
>
> I still have the luxury of being able to buy 120 film (bw negative,
> color negative, slide) locally but I'm already used to ordering
> online. Ordering large heaps of film online for cheap prices is a
> perfectly good practice which is nothing to be afraid of, if it comes
> to that 
>
I've had fairly good luck ordering film online. There was the time Adorama
held up my film delivery for three weeks because another item on the order
was out-of-stock. Irritating.
SW >> Stay informed about: Used MF Prices --- I Should be Happy but not |
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External
Since: Dec 24, 2006
Posts: 271
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(Msg. 34) Posted: Mon Apr 13, 2009 4:47 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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Ken Hart wrote:
> "Rob B" wrote in message
>> I keep my film refrigerated but not frozen. I assume you freeze yours. I
>> had thought about doing this but have been unsure. How long do you thaw
>> it for, and what is the general condition like once thawed?
>>
>> Rob.
>
> For 120/220 film, generally two hours at room temp is good enough for
> thawing. If the film is in it's sealed container, there shouldn't be any
> problems with collecting moisture as it thaws. If you need it thawed faster,
> you can always hold it in your armpit. If you really need it thawed fast,
> there's another place on your body where you can thaw it, but I wouldn't
> recommend it except for recreational purposes!
Guys, please.
Film at room temp, or at 39C / 100F for that matter is _frozen_.
Putting it in a freezer does not make it any more frozen, just colder.
--
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-- usenet posts from gmail.com and googlemail.com are filtered out. >> Stay informed about: Used MF Prices --- I Should be Happy but not |
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External
Since: Jan 08, 2008
Posts: 39
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(Msg. 35) Posted: Mon Apr 13, 2009 7:31 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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"Alan Browne" wrote in message
> Ken Hart wrote:
>> "Rob B" wrote in message
>
>>> I keep my film refrigerated but not frozen. I assume you freeze yours. I
>>> had thought about doing this but have been unsure. How long do you thaw
>>> it for, and what is the general condition like once thawed?
>>>
>>> Rob.
>>
>> For 120/220 film, generally two hours at room temp is good enough for
>> thawing. If the film is in it's sealed container, there shouldn't be any
>> problems with collecting moisture as it thaws. If you need it thawed
>> faster, you can always hold it in your armpit. If you really need it
>> thawed fast, there's another place on your body where you can thaw it,
>> but I wouldn't recommend it except for recreational purposes!
>
>
> Guys, please.
>
> Film at room temp, or at 39C / 100F for that matter is _frozen_.
>
> Putting it in a freezer does not make it any more frozen, just colder.
>
>
Absolutely correct...
An object in a solid state is 'frozen', if that object is then thawed, it
becomes liquid. A steel beam in building construction is frozen, even if the
building is in the desert. When that beam was originally formed, it was
molded (extruded?) in a liquid form. Perhaps if it were heated further than
it's liquid point, you could have steel gas. Conversely, oxygen in it's
usual state is a gas. If oxygen is cooled enough it becomes a liquid. And if
cooled even further, I suppose you could have a solid block of oxygen.
But putting your film in the freezer (even though it is already 'frozen')
will not doubt slow down any chemical reaction in the emulsion, making it
last longer.
Perhaps we could agree to say that while we are not freezing the film, we
are freezing the chemical reaction in the emulsion? >> Stay informed about: Used MF Prices --- I Should be Happy but not |
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External
Since: Dec 24, 2006
Posts: 271
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(Msg. 36) Posted: Mon Apr 13, 2009 7:38 pm
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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External
Since: Feb 18, 2008
Posts: 13
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(Msg. 37) Posted: Tue Apr 14, 2009 6:37 am
Post subject: Re: Used MF Prices --- I Should be Happy but not [Login to view extended thread Info.]
Archived from groups: per prev. post (more info?)
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On Apr 9, 3:19 am, "Summer Wind" wrote:
> "Toni Nikkanen" wrote in message
>
>
>
>
>
> > I still have the luxury of being able to buy 120 film (bw negative,
> > color negative, slide) locally but I'm already used to ordering
> > online. Ordering large heaps of film online for cheap prices is a
> > perfectly good practice which is nothing to be afraid of, if it comes
> > to that
>
> I've had fairly good luck ordering film online. There was the timeAdorama
> held up my film delivery for three weeks because another item on the order
> was out-of-stock. Irritating.
>
> SW
I am sorry that you were inconvenienced; this usually happens only
either when a customer chooses a free shipping option. Occasionally,
if we are expecting an imminent shipment from a manufacturer which
includes an item missing from an order, we might hold an order for a
day or so; problems liker the one you describe can occur when a
manufacturer or distributor lets us down, and doesn't deliver as
promised. We are then left disappointing our customers, which we don't
like to do.
If you ever have a query or concern regarding a future order from
Adorama Camera - or AdoramaPix - please don't hesitate to contact me
directly.
Sincerely
Helen Oster
Adorama Camera Customer Service Ambassador
helen.oster.DeleteThis@adoramacamera.com
www.adorama.com >> Stay informed about: Used MF Prices --- I Should be Happy but not |
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