What happened here? (light leak)

[giganova]

What do you think happened here?

I exposed three films with my Leica M4 and 21mm Super Angulon in quick succession. This was the second roll of film, the ones before and after are fine. I dropped this roll of film on the concrete floor before I put it into the camera. The first 12 pictures are fine, but in all subsequent photos I can see:

- light leaks across the entire width of the negative
- all photos are slightly out of focus
- the images are partially overlapping.

Did I not close the back door? If that was the case, how could I not have noticed an open back door??

Or is it light leaks from the film cartridge that I dropped on the floor (which wouldn't explain why all pictures are out of focus).

Any ideas?

 

[Ronald M]

Cartridge damage. Frames close in were protected 1-12.

B/4 and After ok indicates not a camera problem.

 

[mpaniagua]

Agree, I dont think its a camera problem. Most probably just the cartridge.

 

[papaki]

Lip fog. Light came in from the lip of the film canister. Load in subdued light...

 

[giganova]

Thanks guys, makes sense since I dropped the cartridge before I put it into the camera.

 

[michaelwj]

Frame spacing with the SA is always tight, is this more than usual (it's hard to see)?
Out of focus? User error? Dropping the canister isn't going to cause that?