I don't see how those samples, both of mostly ambient stored film, of different types, different speeds, and over such a wide range of time frames prove or even indicate anything at all (except that 40 year old film deteriorates, which we knew.)
The only valid comparison would be images from two rolls of the same type of film, with the same expiration dates, one cold stored and the other ambient and stored for long enough for the ambient one to show noticeable deterioration. Then we could see if the cold stored one showed less, and subjectively how much less. Anything else is pretty much useless.
yes, what you said is correct, the film-make / speed are different, the ages are extremely different and storage is different.
that said from what a lot of people say one should not do anything but freezer or fridge store film at all costs.
people live by this "creed" and while it is advisable my thread asked if it was absolutely necessary to live by this rigid rule and what peoples' experiences were.
and if people have samples of film that were poorly stored, or with questionable provenance &C and exposed & processed. and to post these non scientifically tested
"samples" while it may seem useless and pointless to have posted film that is about 4 years old and film that is 40 years old --- it shows that film does not degrade beyond use.
and it shows that at 3 or 4 years ambient stored film
seems fine, and 40year old ambient stored film too can still be used.
if i follow the logic of people who suggest film should be frozen,.. the 40 year old hot humid closet stored film should have been useless, fogged beyond any use with no recognizable images on it ...
while i have been shouted down in this thread because i don't want to listen to "science" and mantras as i suggest ambient stored film ( black and white ) probably doesn't degrade as fast as is usually suggested, and even if it degrades / fogs a little bit in a few years of shelf storage, for most lay-people it probably doesn't really matter,
its most likely not going to look like 40uear old film stored in a hot florida closet and even if it does it can probably be "salvaged" ...
and chances are a teensy bit of fog won't make or break and image more than poor composition or not being familiar with equipment or materials.
personally i couldn't care less what people do, if they live by this rigid rule, if they buy special freezers and refrigerators and do critical testing
rotate their stock and treat their film as if it were produce. more power to them ... people should do what makes them confident with their work and makes them feel good, about what they do but they shouldn't denigrate people who haven't found much use for cold storage and think it is a drastic measure ....
personally i don't think my work suffers from 60-75º ambient storage, even 75-80º ambient storage ...
( and i have expired c41, d6 as well as b/w film stored this way and i use them regularly )
i have better things to do with $$ than buy refrigerators and freezers for film.... ( and the electricity to run them )
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Kirks518
good to know your lab knows how to process b/w film, we don't have any places like that around where i am anymore.
and your sample was EXACTLY what i was asking for in this thread. no need to defend it
john