I recently bought a used Alden bulk loader for 35mm film, but when I picked it up there was a roll of black and white film loaded. It's got no remjet and looks like B+W film, but oddly it has cinema-film style perforations with the rounded edges. Undeveloped it has a fairly pale grey colour to it. It's very curly, though that may be due to age. In case it adds to the history, the bulk loader has a "Property of NSCAD" sticker which looks to be an art school/university in Halifax, NS - nearly all the way across the continent from where I bought the loader. This film definitely has a polyester base, it does not tear anywhere close to as easy as HP5 does.
This is how it looks undeveloped:
Thinking it might be super expired Kodak Double-X, I shot a test roll bracketing my exposures 5 stops from ISO 100 down to ISO 6. I used my Canon Elan 7e which has an accurate meter. These were taken outside in bright sunlight (very blue sky, no filter):
Both test strips were developed in HC-110 dilution B. The bottom one was developed for 7 min 30 seconds, and the top strip had 20mL of Flic Film Fog-Off added to the tank (benzotriazole in solution). The Fog-Off bottle recommended adding 10% dev time per 5mL of chemical added, so I did 7.5 x 1.4 = 10.5 min development for the top strip. There's a good amount of base fog, even with the BZT/Fog-Off added. Definitely some usable images, but... no rebate or edge markings of any sort!
The film has some very pronounced grain, visible even when looking at the negatives on a light table:
And here are some scans from the Fog-Off roll. Please keep in mind the film wanted to curl inwards very badly, so the edges of these scans will be out of focus unfortunately...
Rated at ISO100:
Rated at ISO 25:
Rated at ISO 6:
I've read that some bulk Foma rolls have no edge markings, but I also read that Foma uses normal still-photography style perforations on their edges.
If anyone had any insight as to what this roll might be I'd appreciate the help!
This is how it looks undeveloped:
Thinking it might be super expired Kodak Double-X, I shot a test roll bracketing my exposures 5 stops from ISO 100 down to ISO 6. I used my Canon Elan 7e which has an accurate meter. These were taken outside in bright sunlight (very blue sky, no filter):
Both test strips were developed in HC-110 dilution B. The bottom one was developed for 7 min 30 seconds, and the top strip had 20mL of Flic Film Fog-Off added to the tank (benzotriazole in solution). The Fog-Off bottle recommended adding 10% dev time per 5mL of chemical added, so I did 7.5 x 1.4 = 10.5 min development for the top strip. There's a good amount of base fog, even with the BZT/Fog-Off added. Definitely some usable images, but... no rebate or edge markings of any sort!
The film has some very pronounced grain, visible even when looking at the negatives on a light table:
And here are some scans from the Fog-Off roll. Please keep in mind the film wanted to curl inwards very badly, so the edges of these scans will be out of focus unfortunately...
Rated at ISO100:
Rated at ISO 25:
Rated at ISO 6:
I've read that some bulk Foma rolls have no edge markings, but I also read that Foma uses normal still-photography style perforations on their edges.
If anyone had any insight as to what this roll might be I'd appreciate the help!