Black and a White emulsion error that I'd love to duplicated

If this was developed in a SP 445, could it be that the film was loaded emulsion-side facing the holder, rather than outward?

(It looks like the short black lines on the left might respond with the small lamella at the bottom of the holder, and the horizontal light line is roughly where the centre stiffener would run - assuming that your image shows one of the short sides of the film.)

If so, that might then be quite easy to replicate, at least roughly...

Quote:

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Originally Posted by stawastawa

looks like it may have been pressed up against something based on the 'shadows' in the middle of the images shown (horizontal band with rounded corners at left)

I wonder if it could be created by a quick development (pour dev over negative, which is wet pasted to a board/tray)
quick immersion in fix
then maybe repeat

such a procedure might work with silver gelatin paper too... hmmm

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Once you fix, developer will no longer have any effect on the negative. However, pasting the negative on a tilted "board" and dribbling developer in a "hit and miss" pattern at first before developing normal may do this.

did you agitate your film or "stand" / "semi stand" develop
i get effects like that when i get bromide drag from not agitating

The images you uploaded is the actual negative, or did you invert?

That last the processed image in Photoshop ( no longer a negative )

I do two inversions every 30 seconds for 9 mins Tmax 100 @ 70 degrees