Agfapan ASA100 Professional, expired 1980. Processing?

[Wayne]

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If possible, can someone give me some guidance on developer and times. I have HC110, Rodinal, and Diafine. I shot the roll at 100, under very bright conditions.

 

Also, I am expecting delivery of the new formulation of Spur developer, today.

 

 

 

Thanks,

 

Wayne

Edited July 20, 2018 by Wayne

[stray cat]

I may have a similar problem, Wayne - I have some old Agfa colour film from the 1950s I'd like to process. I think the best bet is going to be stand developing - an hour in Rodinal 1:100. I'd be really interested to hear of any other ideas - I'm sure people who have tried something like this will respond.

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[Tmx]

I would try Diafine in this case as a „compensation-developer” and increase a little the time (4+4?)

[Martin B]

Depends how the film was stored - if at room temperature or higher, add one stop additional development needs for every 10 years of expiration. In this case you would develop it for a ASA 800 B&W film. If the film was kept in a freezer, you can use a standard ASA 100 development. 

 

If no development chart is provided, you can use a rule of thumb for B&W development which is that you add one third of the given development time at the base ISO for each pushed stop - in this case at ASA 100. So if it is 10 seconds at ASA 100, I would approx. develop it with 3 stops x 3.3 seconds --> 20 seconds for ASA 800. 

Edited July 26, 2018 by Martin B

[mikemgb]

My general rule for films like this is 9 minutes in HC-110 B, there are so many variables that can affect the film, storage conditions etc., I find it best just to standardize development. I have never failed to get an image this way. It may not be the greatest image but it is always scannable.

 

Recently though, I have come across a few people using stand development for films of this age, usually in Rodinal or D76, that also seems to work well.

[mikemgb]

I may have a similar problem, Wayne - I have some old Agfa colour film from the 1950s I'd like to process. I think the best bet is going to be stand developing - an hour in Rodinal 1:100. I'd be really interested to hear of any other ideas - I'm sure people who have tried something like this will respond.

 

I attempt to develop every film I find in cameras in charitiy shops. Black and white always develops well, colour not so much. The oldest film I have managed to get an image from is 25 year old Fuji. Kodak films seem to degrade faster and 15-20 years is about their limit, this is in C41.

 

I have also tried developing in black and white chemicals and never had any luck with older colour film, I have always ended up with a negative so dense it's impossible to scan.

 

There are companies out there that can often develop films of this age but they use custom soups that for obvious reasons they don't share!

[Martin B]

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I attempt to develop every film I find in cameras in charitiy shops. Black and white always develops well, colour not so much. The oldest film I have managed to get an image from is 25 year old Fuji. Kodak films seem to degrade faster and 15-20 years is about their limit, this is in C41.

 

 

 

I made similar experience - also, color slide film seems to last longer than color negative film. 

[mikemgb]

Double post 

Edited July 26, 2018 by mikemgb