Scratches from develop tank?

[horacekenneth]

I posted here a month or so ago about a single long scratch down the very center of my negative which I thought was being caused by my camera. Well I've ruled the camera out. And I'm pretty sure I've ruled the scanner out too. The film (Arista.edu 400) is either coming this way or I'm causing it somehow when I develop the film (steel tank, nikor reels). I'm not sure what other possibilities there are (I'm not rolling my own).

Can you imagine anything I might be doing while loading or processing film to cause this?

 

[markbarendt]

No.

They seem way too straight and exactly spaced.

I've had lines like these and after much frustration finally found the problem in the camera, the pressure plates on the back had a small imperfection/speck of something on it.

 

[PinRegistered]

Pre-rolled film comes in contact with the cartridge edge and the emulsion touches the camera's focal plane. If it is bulk, you add more edges. Have you seen it on multiple rolls?

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[PinRegistered]

Pre-rolled film comes in contact with the cartridge edge and the emulsion touches the camera's focal plane. If it is bulk, you add more edges. Have you seen it on multiple rolls?

Sent from my SM-G900V using Tapatalk

Sorry, I re-read that you are not doing bulk.

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[darkosaric]

Take 10-15 cm of the film out and inspect it before goes in the camera. Then put the rest of the film in camera and shoot. Then take another 10 cm of the film and inspect it without developing. Then develop half of the rest of the film in open tray in the dark, and half develop in the tank.
Let us know the results.

 

[horacekenneth]

No.

They seem way too straight and exactly spaced.

I've had lines like these and after much frustration finally found the problem in the camera, the pressure plates on the back had a small imperfection/speck of something on it.

The reason I ruled the camera out is because it's occurring on two different cameras (F2 and Bessa R) and I recently ran a roll of color print film through the F2 and there was no scratching. The Ektar I sent out for processing. And yes, I have seen it on multiple rolls, unfortunately, many multiple rolls.

I don't use a hardening fixer, not sure if that would help or not.

Thanks darkosaric.

 

[Xmas]

So have you looked at the leader sticking out of the cassette?

 

[markbarendt]

The reason I ruled the camera out is because it's occurring on two different cameras (F2 and Bessa R) and I recently ran a roll of color print film through the F2 and there was no scratching. The Ektar I sent out for processing. And yes, I have seen it on multiple rolls, unfortunately, many multiple rolls.

I don't use a hardening fixer, not sure if that would help or not.

Thanks darkosaric.

Are you using a mechanical guide for the reels?

The only other thing I can think of is that there is dirt getting on/in the light-seal of the film cassette.