Like any other Slow-Stuff Movement, nobody owns Slow Photography or makes the rules. That’s part of the appeal! It means that one person’s idea of slowness may be different from someone else’s.
But in general, the goal of Slow Photography is to capture photos that celebrate the passage of time. You can do that by taking photos that show time passing, like the long-exposed streak of a train across the plains; or you can spend a long time preparing to snap your shutter, such as the ornithologist who waits for four hours to glimpse a yellow-bellied sapsucker.
Thanks for sharing!