Yellow line on film

Misko78 · Aug 7, 2015

I did some C41 developing for friend and i have this yellow line on one 120 Kodak Ektar on whole length of film. I used Jobo 1520+1530 combination for the first time, loaded with 2 120s on one reel, problematic 120 on one reel and one 135.
Film with that line was in middle where 1520 tank connects with 1530 extender. Other three films where developed just fine, so i assume developing was not a problem.

Could this be a light leek from tank or a camera (Rolleiflex planar 3,5)? I've put strong light into a tank, looked for a leak but couldn't find it, any idea?

ME Super · Aug 7, 2015

Does the yellow line on your scan show up as a blue line on the negatives? If not, then it's a scanning artifact, not a development/processing problem. From my initial look at your scan, this looks like a scanning artifact, not a processing problem. If this is the case, give your scanner a good, careful cleaning and try scanning again.

pbromaghin · Aug 8, 2015

Whenever I see something like this, all I can think is, "Thank God for APUG!". Wherever else would you see this question asked?

Rudeofus · Aug 8, 2015

While this might well be a scanning artifact, there are lots and lots of threads about yellow streaks and spots in C-41 film, usually 120 format roll film processed with two bath kits. It adds to the general confusion that the alleged blue streaks in the negatives are extremely difficult to spot thanks to the orange mask of color negative film.

Here is what I suggest:

make sure that this is no scanning artifact: if the yellow lines only show up in blue sky regions, if they look like drops of dilute yellow paint ran across the sky region etc., then this is likely a processing fault.
If you are convinced that this is a processing fault, try to use a stop bath between color developer and BLIX. Process would go CD, 1 minute stop, brief wash, BLIX, long wash, STAB. You should be able to use any stop bath, but Acetic Acid based stop bathes are preferable. Search the forum for "C-41 yellow streaks" for details.

AgX · Aug 8, 2015

To me it looks like a faint rainbow, even with that higher density off its yellow side.

Xmas · Aug 8, 2015

If it is in the gap between frames on the negative then it is not a rainbow or the lens but could be light leak...

Scan two adjacent half frames to see.

Arctic amateur · Aug 8, 2015

The easiest way to check if this is a scanner artifact is to rotate the negative on the scanner bed and see if the coloured stripe is in the same place on the image.

Misko78 · Aug 8, 2015

Rudeofus said:
While this might well be a scanning artifact, there are lots and lots of threads about yellow streaks and spots in C-41 film, usually 120 format roll film processed with two bath kits. It adds to the general confusion that the alleged blue streaks in the negatives are extremely difficult to spot thanks to the orange mask of color negative film.

Here is what I suggest:

make sure that this is no scanning artifact: if the yellow lines only show up in blue sky regions, if they look like drops of dilute yellow paint ran across the sky region etc., then this is likely a processing fault.

If you are convinced that this is a processing fault, try to use a stop bath between color developer and BLIX. Process would go CD, 1 minute stop, brief wash, BLIX, long wash, STAB. You should be able to use any stop bath, but Acetic Acid based stop bathes are preferable. Search the forum for "C-41 yellow streaks" for details.

I'm using regular C41 Fuji hunt kit with separate bleach and fix baths. And there is no problem with other three films that were in a same tank.It looks to me like streak is running on whole length of film and it is, as you said, extremely difficult to be seen, especially on gaps, but I'll check that again as I'm maybe imagining.

EDIT: I'm not imagining, streak is there I had to use loupe and very strong back light to notice it. Also it is strongest on frame 1, 2 and 12(the one i attached in first post). Frame 12 was the first to go into a reel.

EDIT2:

Arctic amateur said:
The easiest way to check if this is a scanner artifact is to rotate the negative on the scanner bed and see if the coloured stripe is in the same place on the image.

Tried that and streak is always in a same place with same intensity.

Sirius Glass · Aug 8, 2015

Did you by any chance use a rubber band to hold the roll after exposure? If the paper tape is not used and a rubber band is too tight a line will be left on the whole roll or much of the roll.

Yellow line on film

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