Fog on E6 due to long time latent images ?

trendland

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Sometimes I noticed bad image quality with films forgotten to some month in the camera with c41.
But this is not the real problem here.
Now I noticed it first with E6 (Kodak EPP).
Sure this emulsion is expired since some years but it was freezed quite
good since 2010. There are limited ways to correct smal color casts during the developement of E6 films by changing amounts of E6 formulas.
I am quite sure that I am outside the official E6 specifications by using this
methods. (on my own risc in concert of long time stability of my [developed] E6 films).
But in this new case it seams to be not
necessary - because the colors of the last exposures are quite good only the long time before exposures are much foggy.
Now the question : Has anybody an idea what to do buy changing the alternate E6 formulas to avoid fog in E6 wich would caused from long time latent undeveloped images ?
I got it a time ago but I can't realy remember it.There are methods but I did not find it again in my notices - may be because I never need it before.
And sure I know - the best method is to develope films short after exposure.
But, buy the way sometimes it may happen again to forget some films when you have different cameras in use.
To compensate such cases by reformulation of E6 recipes is also an interesting and smart method just from my point of view.
And at least I have to state : I know that it will have a destructive effect to shots on a film wich were new.
But the shots I saw today are not from interest - I got some more films of it.
The old shots (8 - 10 month old) are the case of trouble ( grandious shots but foggy at all )

with regards
 

Gerald C Koch

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Fog is caused by a number of factors such as age, temperature, humidity, radiation, etc. The remedy is to process film as soon as possible after exposure. Freezing does not slow some types of fog.

Prompt processing also prevents fading of the latent image. This is particularly important with some films such as Ilford Pan F Plus where even a few weeks takes it toll.
 
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trendland

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Thanks for reply Gerald at first.Yes I knew the problems with PanF (modern type) I first can't belive it when I heard about.I never had this problems in the past with PanF but I must say also :Bw is mostly developed at the same day ..
But indeed it is a very good example to mark problems due to latent image stability.
There are several facts of impact to expired films (specially with color films) wich are responsible to cause changes of the original designed charactaristics of
emulsions. Yes I know and I also thought about it first.
Even freezed films will see the day of end
from its original quality.
I also have such films in my freezer - but it is extreme cheap stuff - best for tests or for experimental use, crossed processing a.s.o.
When I thing of todays pricing I can't belive the cheapness of this films (allways Kodak Proffessional E6 120/220) therfore it is ok if I try some corrections from developing.
But back to the theme : My Kodak EPP's are still in a absolute best condition.
There should be a context of expired date and a lost of latend image stability of cause it should be an impact.
Totaly new stuff (at this time for E6 only Fuji) will "survive" a couple of month in the camera with absolute no effects (lets better say with no "noticable effects" to the emulsion.
Yes that is indeed the different to PanF today - amazing at least.
Anybody else with an idea to modify (just for example) Derrek Watson in regard to compensate fog ?
As I still can remember and from the logic the key to it is to set on the first developer - so the example with PanF may help indeed a bit. Thanks again for it Gerald.

with regards
 
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