Eugen Rochko@Gargron@mastodon.social
@DJGummikuh@mastodon.social It's a sprocket hole in the film which allows a gear in the camera to latch onto the film and move it in front of the shutter as it opens and closes.
DJGummikuh@DJGummikuh@mastodon.social
@Gargron@mastodon.social oh wow INSIDE the visible area? I would have expected that to run outside of that frame, just like with photo films