Most games mid-development will have some kind of free camera. It's a dev tool that's super useful for making bullshots, but it's a mode that generally gets cut before a game is shipped.
Sekiro: Shadows Die Twice is pretty normal, in that sense. But what's slightly less normal is being able to see the debug mode in action.
Aussie dev and Souls fan Lance McDonald has gotten his hands on a pre-release copy of Sekiro. And as a guy who knows so much of the inner workings of the Souls and Bloodborne engines, it's no surprise that he was able to reactive the developer free camera.
While more games these days give you access to some kind of freecam in photo mode, it's often heavily restricted in terms of how far you can move. The dev camera is much better, and lets you fly wherever you want.
It's the kind of thing the Boundary Break series on YouTube uses to discover all sorts of secrets, and it's what McDonald has used himself to uncover clues and tidbits hiding within Bloodborne and the Souls games (among other techniques).
(There's no spoilers in the below video, in case you were wondering.)
Unfortunately, McDonald hasn't provided any advice on how others could unlock it for themselves. It's nice to know, however, that the mode is there waiting to be unlocked. And you can bet screenshotters and other Souls fans are going to have a blast when it does.