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It's not uncommon for older aerial photos to be single-pixel lines that the film is moved past. The motion of the film is correlated with the motion across the ground, so you can reconstruct a 2nd axis from the exposure.

There's no shutter speed, it's continuous.



"We helped map the Kerrville floods"

"It's not uncommon for older aerial photos"

The Kerrville floods were last summer




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