Triangle shapes in corners of negative?

[dave_flanagan]

I recently noticed a strange artifact in my negatives, taken with a

Rolleiflex 2.8F. The corners are not square, but rather are

curved, like arrowheads. Is this a result of the camera (film

loading, maybe) or processing (overvigorous agitation during

processing)? Or, is it normal? They are only a millimeter or two

across. The negatives otherwise are fine (such a difference,

upgrading from 35 mm!).

 

Thanks,

Dave

[w morgan]

Dave ~ are you using a lens hood or filter on your "taking" lens?

[richard baznik]

I suspect Dave is referring not to rounded corners that subtract from the image area, but to the protruding points that go slightly beyond the normal image area. I get these on images from my Bronica GS-1 system, and they are the result of the shape of the film mask. They are perfectly normal, as far as I can tell.

[brian_turner2]

Could it be the silhouette of the film transport rollers at the top

and bottom of the frame? I've never used a Rollei, but several

other TLRs that I have do this in the corners. On mine, it is

always the distinct shape of the rollers in the corners that prevent

a clean "square" corner... I kinda like it!

[chris_waller]

Yes, I get those on one of my MF cameras. It's due to the shape

of the mask.