This is really expired film!

Mainecoonmaniac · Sep 24, 2019

https://emulsive.org/articles/thoug...5VJb8WKJTnTZAjTITeCujxD2-LcpMt-XFM9xmxjyl19HA

PGraham3 · Sep 24, 2019

Cool article! Thanks for sharing!
-Paul

EMULSIVE · Sep 25, 2019

Really, REALLY old film. Thanks for sharing the article, @Mainecoonmaniac!

Tor-Einar Jarnbjo · Sep 25, 2019

I think he might be a bit off in his attempt to date the film. Film speeds were not standardized by DIN until 1934. Before that in Germany, film speed was measured in Scheinergrad. I can't easily find any pictures of other film rolls from that era, but I would even assume that for quite some time after 1934, films were labeled with film speed both in Scheinergrad and in DIN.

AgX · Sep 25, 2019

Scheiner (not Schreiner)

AgX · Sep 25, 2019

-) "Filmfabrik Köpenick" hints at Kodak as manufacturer
-) "DIN" indicates Kodak as manufacturer
-) 19°DIN indicates manufacture past ca. 1935
-) "Primor" hints at Glanzfilm as manufactuer

I assume that Kodak back then already did rebranding. In 1932 when the DIN designation was introduced or later. With a brand already used by Glanzfilm before.

A complicating factor is that there is no proof that Glanzfilm ever made rollfilms at all. Their interest obviously were industrial films instead.

AgX · Sep 25, 2019

Another thing to consider is that in 1961 the DIN speeds nominally were lifted by 2-4° DIN, the respective film thus was 22°DIN film to standards of today and thus fast for 1930s standard.

EMULSIVE · Sep 25, 2019

Tor-Einar Jarnbjo said:
I think he might be a bit off in his attempt to date the film. Film speeds were not standardized by DIN until 1934. Before that in Germany, film speed was measured in Schreinergrad. I can't easily find any pictures of other film rolls from that era, but I would even assume that for quite some time after 1934, films were labeled with film speed both in Schreinergrad and in DIN.

Very useful information, thank you for sharing. Would you mind adding this as a comment on the article, so the author can see? I understand more information has come to light since he put out his request and this is going to be very welcome indeed.

Tor-Einar Jarnbjo · Sep 25, 2019

EMULSIVE said:
Very useful information, thank you for sharing. Would you mind adding this as a comment on the article, so the author can see? I understand more information has come to light since he put out his request and this is going to be very welcome indeed.

I initially wanted to comment on the article, but the comment function there has been disabled.

AgX · Sep 25, 2019

Tor-Einar Jarnbjo said:
I can't easily find any pictures of other film rolls from that era, but I would even assume that for quite some time after 1934, films were labeled with film speed both in Scheinergrad and in DIN.

Such was definitely the case, though not as general rule.

EMULSIVE · Sep 25, 2019

Tor-Einar Jarnbjo said:
I initially wanted to comment on the article, but the comment function there has been disabled.

Yes, that was my fault. The offending box has been unchecked now. The floor is yours!

john_s · Sep 25, 2019

Interesting, and thanks for posting. Even if it dates from the immediate post WW2 days, it's 70 years old. Is the DIN speed hand written on the box? What amazes me is that there appears to be minimal damage/interaction from the backing paper! And it fed through the camera without cracking (I wouldn't try it in my SL66 which has a tortuous film path though.)

Lionel1972 · Sep 25, 2019

Thanks for all the additional info and hints about the origin and age of the film. I happen to have developped that film and scanned it.
The film itself didn't cause much problem to spool on the Jobo spool but the backing paper felt really weird as I separated it from the film. I felt as if the paper had turned into an adhesive tape (it felt very thin) and clung to the film.
I guess tiny pieces of the paper got glued into the film base which caused the apparent dust all over the scans.
I had developped black and white film from the late 60's and early 70's for other clients which didn't turn out as well as this one.

AgX · Sep 25, 2019

I do not remember seeing a rollfilm box with film speed not printed on it, let alone being handwritten.
Another hint at the max. age would the differenciation between writing by ink/colour-pen or by ball-pen.

Pentode · Sep 25, 2019

I have a 100’ roll of Ansco Finopan dated 1945 rolled into cassettes and stashed in the film fridge. Like the author of the article, I’ve had reasonable success with it. I develop it in HC-110 B and shoot it at EI 12. I wouldn’t use it for any once-in-a-lifetime opportunities but it’s fun to take out and shoot once in a while.

tomkatf · Sep 25, 2019

I think these might be close to 100yrs old... I can't find an exact listing on the WWW...Aha... Because the banner on the sidewheeler doesn't say "Ilford Limited" they appear to be pre-1908...

BAC1967 · Sep 26, 2019

This Kodak NC film expired in 1939, all it says is speed, no actual speed rating. I was able to get some images out of it, the condition of the film seemed to improve the further I got into the roll. The first shots were barely recognizable. This is one of the better shots: https://www.photrio.com/forum/media/crater-lake-lodge.60832/

Kodak NC Film by Bryan Chernick, on Flickr

MattKing · Sep 26, 2019

See this thread for my adventures with 70 year old film: https://www.photrio.com/forum/threa...year-old-verichrome-and-super-xx-film.136477/

This is really expired film!

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