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Old 30th July 2018, 12:14 PM
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Ian Marsh Ian Marsh is offline
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Default Expired film

Does expired film need ISO rating or development time altered to compensate?

If so are there any general guidelines per year or such?

Thanks
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Old 30th July 2018, 02:03 PM
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Hi Ian,
The general consensus is to give an extra stop of exposure per decade. Anything less than ten years of age should be fine to expose at box speed.
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Old 30th July 2018, 02:08 PM
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Hi Ian,

I found an more than 10 years old, expired, unused Acros 100 in my camera bag. I exposed it 1 stop more than usual according to the data sheet of SPUR HRX and gave about 15% more development time than indicated in their data sheet - I had asked for advice from SPUR.

What should I say? Their recommendation worked: the film came out quite nice! It was only a test film, but it worked.

Good luck!
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Old 30th July 2018, 04:33 PM
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Thanks for the quick answers.
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Old 31st July 2018, 02:28 PM
MikeHeller MikeHeller is offline
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I am currently using OOD 120 Film - TMX100 & Delta100 - whose expiry date was the early 2000s at the box speed and developed in Xtol 1+1 for the times in the Massive Dev Chart and they are fine.

However, I have recently exposed some OOD Patterson Acupan 200 (which I understand from an internet search is Fomapan) (Dated 2000) at both ISO200 and subsequently ISO100 developed for the Massive Dev Chart recommended 8½ Min. and they gave very thin negatives in both cases. I think I shall develop them for a longer time next time (say 11 Min).

I have in the past 5 yrs used PanF dated early 1990s at the box rate and developed for the suggested times and they came out fine.

A case of you have to try it and see what happens and if necessary undertake more formal tests with trial bits of film as suggested in a previous Thread about these matters.
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Old 31st July 2018, 04:54 PM
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Quote:
Originally Posted by MikeHeller View Post
I am currently using OOD 120 Film - TMX100 & Delta100 - whose expiry date was the early 2000s at the box speed and developed in Xtol 1+1 for the times in the Massive Dev Chart and they are fine.

However, I have recently exposed some OOD Patterson Acupan 200 (which I understand from an internet search is Fomapan) (Dated 2000) at both ISO200 and subsequently ISO100 developed for the Massive Dev Chart recommended 8½ Min. and they gave very thin negatives in both cases. I think I shall develop them for a longer time next time (say 11 Min).

I have in the past 5 yrs used PanF dated early 1990s at the box rate and developed for the suggested times and they came out fine.

A case of you have to try it and see what happens and if necessary undertake more formal tests with trial bits of film as suggested in a previous Thread about these matters.
Mike
I agree with Mike. I have just developed some OoD by six years Agfa APX100 at box speed in HC110 for the suggested time and the negatives were fine. I do not make adjustments when processing until I have seen the results.
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