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Richard Wasserman
13-Sep-2012, 09:03
With all the uncertainty with Kodak I want to put away a stash of Portra 160, which I will keep frozen. How long should it remain good? I'm not concerned about processing which I do myself in a PhotoTherm, and can stockpile chemistry.

vinny
13-Sep-2012, 09:28
Since there aren't any other options, I wouldn't worry about it. I've got kodak PRN color neg from the 90's that I'm getting great results from (scanning, I haven't printed optically).

Drew Wiley
13-Sep-2012, 10:21
I'm planning on about a decade of frozen storage, which seems conservative and safe.
The important thing is to rotate out and use the older film first, then replenish it. If Kodak
is viable another five years, for example, that would mean at least a fifteen year film supply. Unfortunately, it keeps getting more expensive as time flies. If there is a complete
supply crash somewhere down the line, the necessary chemistry itself will become scarce.
I'm in that boat with Cibachrome right now, but fortunately, have the right amt of stored
chemistry to cover my remaining frozen paper.

Frank Petronio
13-Sep-2012, 11:13
The emulsion lifts off, I was using 2004 warm stored Portra 800 that is now beginning to fail. Cold will last longer but who knows? I wouldn't bet on anything over 10 years in good conditions.

Richard Wasserman
13-Sep-2012, 11:24
I will be very happy with a 10 year supply of Portra. I can't predict the future of course, but I'm now 61 and in 10 years will not be surprised to find that digital has matured along with me. Or I'll shoot black and white, which has always been my main interest.

frotog
13-Sep-2012, 15:55
If you plan on processing c-41 yourself in a phototherm machine then you won't have to worry how long it stays fresh.

Richard Wasserman
13-Sep-2012, 15:58
I don't understand, can you please elaborate? Film with age develops fog and other artifacts.



If you plan on processing c-41 yourself in a phototherm machine then you won't have to worry how long it stays fresh.

Andre Noble
14-Sep-2012, 14:36
I've got kodak PRN color neg from the 90's that I'm getting great results from (scanning, I haven't printed optically).

Hey Vinny, just wondering, what year exactly in the 1990's is your Kodak PRN?

BTW, it's anecdotes like yours that proves most useful.

vinny
14-Sep-2012, 15:17
Hey Vinny, just wondering, what year exactly in the 1990's is your Kodak PRN?

BTW, it's anecdotes like yours that proves most useful.

this batch exp 1998. I have a bunch more of this stuff. It scans easier than any other c41 film I've shot.
http://farm5.staticflickr.com/4016/4561705953_da317815fe.jpg (http://www.flickr.com/photos/62218065@N00/4561705953/)
roadside (http://www.flickr.com/photos/62218065@N00/4561705953/) by vinnywalsh.com (http://www.flickr.com/people/62218065@N00/), on Flickr

jayabbas
14-Sep-2012, 15:22
Nice Photograph Vinny !!

Andre Noble
14-Sep-2012, 17:35
Nice.