120 ecn-2 stripe

[yonsama]

Hello. All my other films are fine, but this one is the only one showing this problem. What could be the problem?

 

[lamerko]

It appears that whoever rewound the film did not seal the paper properly, resulting in light leaks along the edges. At the upper end, one can clearly see alternating red and blue reflections, most likely caused by the different layers of the winding…

 

[loccdor]

It's interesting that the lines are perfect 90 degrees. I've never seen any light leak or developing problem with such a perfect angle.

 

[koraks]

I'd like to see a photo of the actual film as seen by the naked eye - no scan, but a photograph of the actual film held against a backlight.

 

[MattKing]

It is strange that the streaks are dark in the positive.

 

[koraks]

There's more strange stuff. How about the red color that seems to be inside the sprocket holes:

Hence my question to be shown the actual film, just to remove any additional complications from scanning/digitization.

 

[lamerko]

In my opinion, this is the result of light leakage between the layers, when light passes between the front and back sides of the film, probably through the backing itself.

 

[koraks]

But how do you explain this:

That's lower density, transitioning into pure black (base/no density).
If what you say is correct, then the definition of the lower sprocket edge would still be sharp as this is apparently a scene of a tree against a stretch of sky. The sky would continue into the sprockets, so those should have a sharp edge.

Again, let's have a look at the actual film.

 

[lamerko]

What I can assume is that it was photographed with a phone or a digital camera at a slight angle. The upper edge is distinct and in focus, but the lower one is definitely blurred. Perhaps the direct light from the light table in this case has enhanced the "smearing" But it is definitely something strange - I flipped the image and corrected it using the red areas immediately along the perforation. The result, if the negative really looks like this, is somewhat unsettling…

 

[brbo]

I've seen something similar as a scanning artifact on Noritsu scanners. Although only on a BW film with high contrast and clear base or if you punched a hole in a film (which is consistent with OP's case as sprocket holes are in the image area). Transitions from zero density to higher density would produce such artifact running parallel to sensor orientation.

I'm about 98% sure this is a scan from Noritsu scanner. They are definitely not designed to "see" zero density (on a film scanned as negative) in the image area.

edit: Found my test scans when I was trying to find a solution to this...

This is a strip of film with totally opaque material taped to it and a hole punched through it.

(scanned as a colour negative)

(scanned as a positive)

Also checked exif on OP's image and it WAS scanned on Noritsu scanner. I'm now 99% sure that the film is perfectly fine and this is just a scanning problem...