Quote Originally Posted by Rafal Lukawiecki View Post
Could it be some slightly sticky mess on the camera pressure plate? Oozed out due to age/temp around a light seal? Does the pattern diminish towards the end of the roll? And did you expose those films around the same time?
Hi Rafal,

All this film was exposed over the last couple of weeks. I think we can rule out the sticky mess theory; just checked again and both cameras are spotless - One of the last made (2002) mint Nikon F3HP thats regularly used, and a Fujifilm Klasse W thats also mint but used regularly ...I've been the only owner of both. The pattern is also reasonably consistent across every frame it appears on.