This is a great thread, the images are wonderful!
Here's an image I exposed with my Voigtländer Avus summer 2021 using Ilford HP3 plate pre 1944, sensitivity by now approx ISO 25.
(More in the link: https://www.flickr.com/photos/jojjek...h/51368330607/
working field copy by Thad Gerheim, on Flickr
Thad Gerheim
Website: http:/thadgerheimgallery.com
Once in a museum in the 90's we got a camera (Baby Box Tengor) with a film roll in it, I developed it and it had a bit more base fog but still good: apparently exposed in the 60's. Apparently glass plates protect themselves somehow, deterioration being only in the edges.
Perhaps this poster could find the many posted over time on our forum
I know I have a few scattered on this forum
I also have shot very old unexposed plates that may be of interest
These 120 year old NOS 5X7
PS 1884 Standard Dry Plate Company 5X7 by TIN CAN COLLEGE, on Flickr
HAT 1890 Glass NEg by TIN CAN COLLEGE, on Flickr
Tin Can
This image is from a 5x5 glass plate that I found in an antique store in Walla Walla, Wa. probably 20 years ago. This was the first in my collection of glass plates, tintypes, antique negatives and still my favourite. The unframed image is just me playing around with the collection, but with the same plate.
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