Mystery film

[cramej]

It came in a foil lined red paper wrapper, has no markings on the backing paper and no edge markings on the film except what looks like "SGPFF" at two points along the film. I had no idea how to process it or how old it is so I guessed. I shot it at EI 50 with a red 25 filter because I thought maybe it was SFX. My D76 was still cooling so I ended up processing it at 90* for 4 min and somehow, someway I actually have some good looking negs! It's still drying but I'll try to get some scans up in the next day or two. Any idea of what film it is?

John

 

[Athiril]

That edge code is Shanghai GP3.

 

[wildbill]

Amazing what using the search window will turn upthere was a url link here which no longer exists)

 

[Athiril]

I only see one person on one of those threads suggesting it is probably Shanghai but not definitive, with another adamantly (and incorrectly) stating it's Lucky in the other thread.

SGPFF is most definitely Shanghai GP3.

 

[JW PHOTO]

Yes, that's the edge marking code for Shanghai GP3. In the red wrapper is the early batches as the new batches are in a plain silver wrapper

 

[Newt_on_Swings]

I've shot a handful of those firecracker red films. It's definitely a Chinese 100 speed film. Shooting a 100 speed film with red filter that typically a has a 3 stop reduction of transmitted light would give you an effective ei that's quite low (100-50-25-12). I'm surprised you found your negatives to be well exposed after processing with a two stop under exposure with old film.
I have two rolls left of these, does it look similar? The newer films are in a white with silver packaging. These are super curly after processing.

 

[JW PHOTO]

The older stuff had a very good curl to it, but I get almost no curl with the silver wrapper stuff. I did notice that certain developers make the newer stuff lay even flatter in my scanner holder. I have no curl with Pyrocat-MC and slight curl with Perceptol. Strange, but true. John W

 

[Athiril]

I've shot a handful of those firecracker red films. It's definitely a Chinese 100 speed film. Shooting a 100 speed film with red filter that typically a has a 3 stop reduction of transmitted light would give you an effective ei that's quite low (100-50-25-12). I'm surprised you found your negatives to be well exposed after processing with a two stop under exposure with old film.
I have two rolls left of these, does it look similar? The newer films are in a white with silver packaging. These are super curly after processing.
View attachment 95833

Wait till he sees what the actual images look like, back when I used the red stuff when it was fresh, I did push it a few times, pushed well.

 

[cramej]

I've shot a handful of those firecracker red films. It's definitely a Chinese 100 speed film. Shooting a 100 speed film with red filter that typically a has a 3 stop reduction of transmitted light would give you an effective ei that's quite low (100-50-25-12). I'm surprised you found your negatives to be well exposed after processing with a two stop under exposure with old film.
I have two rolls left of these, does it look similar? The newer films are in a white with silver packaging. These are super curly after processing.
View attachment 95833

That's it. It got it with a camera I bought a few years ago and never used it - finally got around to it just to figure out what it really was. Definitely curly after processing! And not bad results for my rather careless processing.

Thanks, all!

 

[cmacd123]

"Shanghai General Photo Film Factory"

 

[JW PHOTO]

"Shanghai General Photo Film Factory"

Is that a fact? Just curious.