I have been restoring old film and prints as a small part of my business for years.
Observation 1. Film can deteriorate pretty much the bulk of colour negatives and prints from the 60's and 70's are suspect. As well Black and White film that comes here is sometimes in suspect shape.
In both cases I lay blame on two things, poor process and poor storage.
I just finished a show of prints that were all from negatives 1910-1920 and all were able to produce excellent silver prints. so with good process BW is at least a 100 yr media.
To add a bit of info from the digital side of the coin: We have been able for years to record via LVT recorders any type of image whether its is from scans of film or from digital capture.
A very good example of this is Sebastian Salgado who is printing all of his Genesis work on Ilford Warmtone on an enlarger but with a twist- the capture device is Leica digital camera and 4 x5 BW LVT negatives are being made that go into an enlarger. This has also been the case for many colour workers who are recording digital images onto transparancy and then optically making Cibachrome shows.
BTW this technology has been with us since the early 90's and I am shocked that there are those who are not aware of this method of archiving both methods of capture.
Currently I am making full colour pigment gum over palladium's from digital capture. As well being commissioned to make pt pd prints from digital files. The reason is to produce historically significant Black and White and Colour work. I for one do not think for one second that the digital capture is less capable for producing archival results.
I find all arguments that digital is not as good as film, and vice versa completely boring and quite misinformed to what is actually happening.
There are those who argue from a very narrow experience platform and then there are others who feel this discussion has long been solved.
Tri colour Black and White separation negatives are now quite normal to be considered for preserving ones colour work - whether its from a film camera or digital camera.
Lets hope Sean keeps up his promise so workers like myself can properly show , display, discuss this debate here on APUG with clarity.
With all medias like colour negative or digital capture we will have to make an effort to make a more permanent record- even BW .
QUOTE=Theo Sulphate;1953823092]Sure. Film is much easier to preserve. Regardless of media, I believe the most important criteria is a willingness to preserve the image. Twenty years from now, someone can go to their late aunt Exa's house, open up an old shoebox, look at the negatives, and decide the box's contents are worth keeping. If they open up a desk drawer and see ancient USB sticks, SD cards, or CD's - will those simply get tossed or will someone make the effort to read them?
Digital images are viewable only as long as the following is true: the data is preserved, a device exists to read the media, a software application can interpret it, and that application can create an image on a current display device.
If they make the effort to read the media, will that media still be readable (how long do USB sticks or CD's hold data)? If it is physically readable, will there be a device that can read it (in 20 years will there be a CD reader that Exa's nephew might have access to)? Although I actually do have a dual 8" floppy reader (DEC RX01), I can't expect my successors to be willing to try to find a USB 2.0 reader. Even if they get that far, will they be able to read the NEF file Exa created in 2015 with her Nikon D810?
So that's the point: to preserve a digital image over a hundred or so years someone has to copy that image from its current media to the next new media and maybe re-save it in the next less obsolete format. Sure, it can be done, but it requires not only effort, but also requires will. It's a lot easier to put negatives in a safety deposit box and be sure they'll need no long term maintenance.[/QUOTE]