recurring mark on MP negatives

[grahamc]

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Hello

Long shot, but wondering if anyone has seen this mark before (see near top right corner).   I thought this might be a hair or dust  but I've had a good blow around of camera and lens , but still appears on negs.  in fact previously it was only one 'loop' pattern, but now is 2 side by side.

It's on most negs but not all . 

Just wondering if it's possibly something sticking mechanically or whether I simply need to go a bit harder with the blower and a lupe ! 

Cheers

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[TomB_tx]

Maybe a loose / frayed thread on one of the shutter curtain ribbons? It would be at the bottom left on the opening curtain. Remove the lens, set shutter on B and examine that area while holding the release down so the shutter stays open. If a frayed/damaged ribbon rather than a loose thread I'd have the camera serviced.

[69xchange]

Yeah looks like loose thread of shutter curtain ribbon or even the light seal felts. Inspect the film gate in bulb mode like the previous comment suggested.

Edited June 11, 2024 by 69xchange

[250swb]

Set the camera on B and keeping your finger on the button look at the bottom of the shutter gate (image projected back to front and upside down).

[grahamc]

Thanks all.   I suspected could be something like this. Bummer ! Ok will inspect properly asap and report back 

[M.RB]

Could be a bit of felt from a film canister trapped around the film gate, especially bulk loaded/reuseable canisters. 

[grahamc]

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6 hours ago, M.RB said:

Could be a bit of felt from a film canister trapped around the film gate, especially bulk loaded/reuseable canisters. 

Thankyou.    Well it seems I was in luck - putting camera in bulb mode as suggested here , I was able to see the offending lint/felt and blow it away.   It was indeed right at the end of a shutter ribbon though so I thought it was frayed curtain until it blew away. 
 

in my impatience I blew it right into the camera, but never mind !

thanks everybody