Hi, I'm new to this world, so I thought I'd clear up some doubts here with you guys. Just saw this photo on X, from @tyron_shi, and couldn't help but wonder how to get this effect.

The way my brain translates this is: Take two photos, the first with a long exposure and make that vertical movement. Then take the same photo without any movement nor long exposure. Afterwards, in Photoshop, overlay the first image on the second and use some layer mode.

What do you think? you see any other way? I'd love to hear your thoughts.