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#1
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is 5 years old
I found a box of hp5+ sheet film that I bought in 2000 or so, and has
been laying around upstairs, partially used, since 2001. It was dated 2005, but has been sitting in a room that gets pretty warm sometimes in summer (certainly up to 80F). Am I correct that its probably pretty close to just fine though? |
#2
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is 5 years old
In article . com,
"Joe" wrote: I found a box of hp5+ sheet film that I bought in 2000 or so, and has been laying around upstairs, partially used, since 2001. It was dated 2005, but has been sitting in a room that gets pretty warm sometimes in summer (certainly up to 80F). Am I correct that its probably pretty close to just fine though? try it what's to loose? -- LF Website @ http://members.verizon.net/~gregoryblank "To announce that there must be no criticism of the President, or that we are to stand by the President, right or wrong, is not only unpatriotic and servile, but is morally treasonable to the American public."--Theodore Roosevelt, May 7, 1918 |
#3
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is 5 years old
"Joe" wrote in message ups.com... I found a box of hp5+ sheet film that I bought in 2000 or so, and has been laying around upstairs, partially used, since 2001. It was dated 2005, but has been sitting in a room that gets pretty warm sometimes in summer (certainly up to 80F). Am I correct that its probably pretty close to just fine though? Its probably OK provided no moisture got into it. I recently used some HP-5 in 120 roll size that was about 12 years old and got perfectly good negatives. Of course test a sheet before using it for anything important. Moisture can cause an odd mottled fog and is not responsive to bromide. I've used film that was nearly 20 years old with good results. Very old film will become somewhat fogged. If only slightly fogged you need only to increase exposure a little. If you want to eliminate the fog add a little Potassium bromide to the developer. For D-76 around 0.25 to 0.5 gram per liter of full strength developer is enough. -- --- Richard Knoppow Los Angeles, CA, USA |
#4
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is 5 years old
Gregory Blank wrote: In article . com, "Joe" wrote: I found a box of hp5+ sheet film that I bought in 2000 or so, and has been laying around upstairs, partially used, since 2001. It was dated 2005, but has been sitting in a room that gets pretty warm sometimes in summer (certainly up to 80F). Am I correct that its probably pretty close to just fine though? try it what's to loose? the opportunity to ask the question. |
#5
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is 5 years old
Richard Knoppow wrote: "Joe" wrote in message ups.com... I found a box of hp5+ sheet film that I bought in 2000 or so, and has been laying around upstairs, partially used, since 2001. It was dated 2005, but has been sitting in a room that gets pretty warm sometimes in summer (certainly up to 80F). Am I correct that its probably pretty close to just fine though? Its probably OK provided no moisture got into it. I recently used some HP-5 in 120 roll size that was about 12 years old and got perfectly good negatives. Of course test a sheet before using it for anything important. Moisture can cause an odd mottled fog and is not responsive to bromide. I've used film that was nearly 20 years old with good results. Very old film will become somewhat fogged. If only slightly fogged you need only to increase exposure a little. If you want to eliminate the fog add a little Potassium bromide to the developer. For D-76 around 0.25 to 0.5 gram per liter of full strength developer is enough. thanks-thats pretty much what I figured. |
#6
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is 5 years old
On Tue, 25 Oct 2005 04:13:36 GMT, "Richard Knoppow"
wrote: [---] Its probably OK provided no moisture got into it. I recently used some HP-5 in 120 roll size that was about 12 years old and got perfectly good negatives. Is there any advantage in freezing black & white film for storage, or does that really only apply to colour film? |
#7
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is 5 years old
I know I always freeze it if it osnt going to get used for a few years,
or if the expiration date approaches. Cant hurt anyway. |
#8
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is 5 years old
"Andrew Price" wrote in message ... On Tue, 25 Oct 2005 04:13:36 GMT, "Richard Knoppow" wrote: [---] Its probably OK provided no moisture got into it. I recently used some HP-5 in 120 roll size that was about 12 years old and got perfectly good negatives. Is there any advantage in freezing black & white film for storage, or does that really only apply to colour film? Also applies to B&W. Freezing slows down the chemical reactions that continue in the emulsion and result in fog and other changes. It also works for paper. Freezing is now recommended for archival storage of processed photographic materials for the same reason. -- --- Richard Knoppow Los Angeles, CA, USA |
#9
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is 5 years old
Richard Knoppow wrote:
Also applies to B&W. Freezing slows down the chemical reactions that continue in the emulsion and result in fog and other changes. It also works for paper. Freezing is now recommended for archival storage of processed photographic materials for the same reason. From what I understand, if you are going to freeze photographic materials which have been removed from their original packaging, it is a good idea to seal them in an airtight container with some desiccant. I also understand that film (especially fast film) will eventually fog from background radiation. I haven't seen any real data on this, but I have the impression that hp5 will show significant fog after a decade or so. I have some hp5 which expired in 1982 left over from into photography as a kid which was stored in a reasonably cool and dry place. I used a bit of it a few years ago when I got back into photography and it was certainly usable in the sense that one could take pictures with it, but the fog level was rather high. I bought some old Leica cartridges on Ebay a couple years ago and a few of them were loaded with film. The film turned out to be Agfa Superpan on nitrate stock with BH perfs. The film must be something like 70 years old, but the fog didn't seem any worse than the 25 year old HP5 (it is hard to tell because 35mm HP5 has a grey base and the old nitrate film looked brownish and I'm not entirely sure how fast Superpan was though I'd guess ISO 50). I think I still have three rolls. Peter. -- |
#10
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is 5 years old
On Thu, 27 Oct 2005 00:22:58 GMT, "Richard Knoppow"
wrote: Is there any advantage in freezing black & white film for storage, or does that really only apply to colour film? Also applies to B&W. Freezing slows down the chemical reactions that continue in the emulsion and result in fog and other changes. Thanks - so it's into the freezer with all the AXP and Scala I can get my hands on. |
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