Please consider the possibility that your squeegee may be causing the streak. There is a great divide as to whether a squeegee is nescessary and for years I was in denial ! There can be 3 ways a squeege can cause damage. Firstly direct physical damage of the wet emulsion by over enthusiastic use. Not so here. Secondly deposition of degrading rubber as a visible black line. Unlikely here. Thirdly, and more probable, a physical nick or defect in the rubber blade that leaves a wet trail of the final wash. Any minerals in the water can leave a subtle drying mark as a long tramline of differential density. Barely visible on the negative, this shows up on scanning or printing. What have you got to lose ? Follow your usual steps on a test film and instead of squeegeeing, final rinse in Photoflow and then with the film still in spiral, shake the water off vigorously and hang up to dry.
Kind regards, John.
I'd be looking closely at your shutter. It's possible there's something dragging behind, or in front of the curtains causing the slight underexposure. It's not a light leak, that would result in a lighter line in the photo (darker on neg)
I'd be looking closely at your shutter. It's possible there's something dragging behind, or in front of the curtains causing the slight underexposure. It's not a light leak, that would result in a lighter line in the photo (darker on neg)
I think some elimination is in order to narrow down the options.
Does this also occur with other film apart from this particular tri-x batch?
Does the same film exposed in a different camera exhibit the same problem?
If you look at the fully exposed leader of the film, are there signs of the same longitudinal band?
Ok guys. the cam is back from the cla. the guy said that the lightmeter was extremly off and it underexposed by a lot. they couldnt film test the cam but they pollished the inside and that should get rid of any streaks.
Meanwhile i filtered the fixer. used just one drop of photoflo at the end and stopped using the squeege.
the new result got rid of all the nasty stuff on the negative but the STREAK IS STILL THERE.
Do you have another camera you could try? Keep everything else the same, and see if the streak is still there on the film. Another option is to shoot the same scene at different shutter speeds and see if there is any change in the band. Also, does the band extend beyond the frame of each shot?
The streak looks well defined, so I'd suspect it's something to do with the camera rather than the film or development process.