These are spectacular. Well done to both the original photographer and you for reviving them!! I love seeing pictures of an older world, one that has disappeared forever. Now you have encouraged me to look at some of my father's negatives from the 1930s and 1940s. If you cannot revive your scanner, I suggest one of the Plustek models, such as the 8200i. It is possibly marginally poorer than the Nikon, but comes with Silverfast Ai software.
Something to consider: Here you have showed us pictures taken 80 years ago. Will our descendants be able to view our 80-year-old digital files? You really think so? I worked at a US Government research lab with professional IT support, and we often could not read media only 15 years old (such as VAX/VMS 4mm DAT backup tapes).
The Nikon is working for now, but has been having myriad of strange issues. But I have invested too much money in holders to change.
As for digital photo recovery, who knows? One obvious benefit analog photos have, is that they just...ARE the photo. Not a set of 0s and 1s that have to be decoded in a certain way. An other problem, is that it is not always clear the storage medium in question has digital images. Unless the handler knows what is on the medium, or the medium has specific labels, it could be anything. And those labels can be...nonsense to the untrained eye. The importance of something is not always clear.
Long-term storage and recover ability of digital images defends on a few things: Storage medium, format and metadata.
Lower data density mediums like magtapes are underrated. The data recovery precentage on +40 year old tapes is surprisingly good. This is simply because they were written with quite strong magnetic fields and at high saturation. Unless a tape has been
degaused (Something unlikely to happen by accident) and storage conditions were stable, there is a good chance data can still be recovered.
Finding the correct drive can be difficult, but in theory you should be able to digitize any tape as long as you have a head with the correct track geometry, and a stable drive system. Technically you can digitally record the voltage changes from head and convert it into bits. This is basically what the ADC in the drive does with its own firmware. This is something an american computer museum tried to rig up, so they could in theory digitize the raw magnetic flux of virtually every computer tape every made regardless of format or condition. But I think they gave up, real shame.
(Lets just use normal drives)
An other problem with digital files, is that they may have been saved in a system/brand/series/drive specific encoding. THe UNIVAC format is obviously different from the IBM 360 format, and PDP-11. Even within brands, compatibility was not guaranteed. Even drives meant for the same computer could be incompatible! (7/9 track, data density)
After data recovery has been successful, the data needs to be converted to a modern image file. Documentation on the raw image formatting needs to be found, which may have been project-specific. If so, you would be lucky to find one of the people that worked on it, or any documentation at all. If you are blessed by the gods, there will be metadata with dates, names, project titles, exposure settings (Of course this can also be in some kind of strange text format!)
I'll upload some stuff from 78 I am working on with some people as a project. Lets see how far we come. See file1.zip for the binary data from file 1
