Do you also have trouble flattening Kodak Gold 120 film with books?

[pentaxuser]

I was just trying to see what, if any, evidence exists on vinegar syndrome affecting acetate-based film and at what kind of time interval.

I assume that what the likely life expectancy of acetate-based film is an important consideration for most photographers and if that life is beyond the need of most photographers then the fact that it may well not last as long as polyester may not be of much importance

pentaxuser

 

[MattKing]

Vinegar syndrome is a major problem for archivists - the people at the Vancouver archives have had to resort to digitization to help deal with potential image loss in respect to their extensive collection of negatives, including many Cirkut negatives.

 

[MattKing]

Granted, this is from a company making it and so it might be biased, but it does give some idea.

https://www.daicel.com/cell_ac/en/

https://www.daicel.com/cell_ac/en/triacetate/

As I understand it, the Cellulose is converted but the process uses a lot of pertochemicals to make the conversion happen.

 

[gbroadbridge]

While the raw materials may be natural, the manufacturing process is not particularly environmentally friendly.

As you would expect a certain amount of ‘greenwashing’ occurs in manufacturers statements.

 

[mshchem]

While the raw materials may be natural, the manufacturing process is not particularly environmentally friendly.

As you would expect a certain amount of ‘greenwashing’ occurs in manufacturers statements.

Absolutely true!

 

[mshchem]

I have a beautiful film drying cabinet, I'll give it a try. I use it when my freeloading friends come by and get free processing

 

[Certain Exposures]

@Sanug do you have another thread where you have shown more 1:1 Lucky examples?

 

[Sanug]

No, I am sorry.

 

[BurntOutElectronics]

I was just trying to see what, if any, evidence exists on vinegar syndrome affecting acetate-based film and at what kind of time interval.

I assume that what the likely life expectancy of acetate-based film is an important consideration for most photographers and if that life is beyond the need of most photographers then the fact that it may well not last as long as polyester may not be of much importance

pentaxuser

Any archival facility will echo the woes of vinegar syndrome. The film shrinks and twists, and smells pretty nasty of course.
Vinegar syndrome can occur after 20 years of poor storage, but can even happen much sooner than that if the batch of material is of poor quality/stability.
After 40 years, most films are under threat of some form of degradation.
There isn't a golden rule, it's all manufacturer and batch dependant

 

[Certain Exposures]

@Sanug okay, thanks for sharing those. I like the Gold frame's composition with the boat a lot.

It looks like Lucky has a blue cast and less vibrant greens in comparison to Gold on my screen.

 

[Sanug]

Well, I don't own a calibrated screen. I did the colour conversion with VueScan by sight and with no further adjustment. The tint may be fine adjusted with some more effort than I did.

 

[Certain Exposures]

Okay, gotcha.

Yes, it's new gold 200 - the flimsy stuff.

Perhaps I'm the only person who warm air dries the film at 100F instead of just hanging it at room temperature.

View attachment 423340

I will try using a space heater to make the ambient temp higher and a hair dryer. Well, are you using a hair dryer or something specially designed for this?

 

[gbroadbridge]

Okay, gotcha.



I will try using a space heater to make the ambient temp higher and a hair dryer. Well, are you using a hair dryer or something specially designed for this?

I hang the film vertically in a piece of 100mm diameter PVC conduit with a temperature controlled hot air gun blowing from top to bottom.