120 film: Head or tail

hankchinaski · Sunday at 9:56 AM

Hi,

I need to test a roll of 120 film for dev times, but unfortunately I don't have a test strip, so I am planning to skip one photo after the roll is loaded in the camera and then cut it off in the changing bag while loading my tank and then use that piece to do tests. I want the piece from the free end, where the film is not taped to the backing paper.

Is it the first photo or the last? If I am correct it would be the last photo.

retina_restoration · Sunday at 10:01 AM

hankchinaski said:
Hi,

I need to test a roll of 120 film for dev times, but unfortunately I don't have a test strip, so I am planning to skip one photo after the roll is loaded in the camera and then cut it off in the changing bag while loading my tank and then use that piece to do tests. I want the piece from the free end, where the film is not taped to the backing paper.

Is it the first photo or the last? If I am correct it would be the last photo.

The film at the opposite end of the taped end is the last of the film, correct.

hankchinaski · Sunday at 11:00 AM

retina_restoration said:
The film at the opposite end of the taped end is the last of the film, correct.

Thanks!

mshchem · Sunday at 12:05 PM

I remember this by imaging the film being dragged through by the tape. Thus tape end is the beginning .

620 film used tape at both ends due to the tiny diameter of the 620 spool.

bernard_L · Sunday at 12:14 PM

Since you need some margin/buffer, you probably need to devote two frames in order to test one.
I sometimes cut a half-exposed 120 film, being curious to see the pictures before the roll is finished; in that case I cut in the middle of an empty (buffer) frame, and re-position the adhesive band. Then roll tight on the supply side, and "shoot" until frame N+1.

120 film: Head or tail

hankchinaski

retina_restoration

hankchinaski

mshchem

bernard_L

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