Green Mark on Negatives. Hasselblad

[chrishayton]

000033200008 by chrishayton, on Flickr

My last couple of films have shown this green mark on some but not all of the images.
I have used two different lenses and it shows up with both

They can appear in any place of the vertical axis but always in the same place horizontally across the image

Any idea whats causing it. Camera is a Hasselblad 500cm

 

[santino]

Same roll of film? Looks like a film which was bend before Processing.

 

[x-ray]

Cescent marks are cause from kinking / crinkeling the film when loading the reels or processor. Rough handling of the film. It has nothing to do with the camera.

 

[Dwig]

While it is possible that these are some form of flare or light leak, thr possibilities are very low compared to the possibility that this is the result of kinking the film before processing. The shape, size, and fade-out characteristics are a perfect match to the mechanical "exposure" that results from a kink.

Examine the film base side very carefully, sighting across is so that there is a reflection from its shiny surface in the area of the mark. If you see a disturbance in the surface at that location that verifies that a kink is the cause.

 

[BLKRCAT]

Cescent marks are cause from kinking / crinkeling the film when loading the reels or processor. Rough handling of the film. It has nothing to do with the camera.

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[Moto-Uno]

Do you have longer fingernails ? My experience with kinking is usually closer to the edges of the film , but , I've had a couple somewhat similar , really have to scub those little ballbearing with soap after a few uses ( and thoroughly drying ) or they can lead to kinking when they bind up in their grooves . Peter

 

[Ronald M]

Cescent marks are cause from kinking / crinkeling the film when loading the reels or processor. Rough handling of the film. It has nothing to do with the camera.

Agreed. 120 and 220 is most vulnerable. It can happen with 35 mm also,but much more rare.

Reel loader person squeezed and kinked across width.