Problem with Polaroid 550 4x5 back
I have a problem with a second-hand 550 4x5 back, all the pic I get with this back have the same issue, see the attached image.
I tried with Fuji FP-100 C45 instant film and with genuine Polaroid 554 (very expired) film, with almost same disastrous result.
Where I got wrong ? It's a problem with the back ? Light leaks ?
Is changing the roller part will cure the problem ?
Sorry if this thread is misplaced here, but I think it's regarding more 4x5 LF back rather than "toys camera and polaroid", (it's not amusing me anymore ;)).
Thanks for your help,