Yes, 4K exists. The Watchmen 4K Blu-ray (2.35:1 Scope) is stunning. However, the Open Matte version has never been officially released on 4K Blu-ray. It exists only in 1080p.
Most modern films are shot in a native aspect ratio that captures more vertical information than what you actually see in the theater. To create that classic "cinematic" look, filmmakers apply a "matte" (black bars) to the top and bottom of the frame, resulting in a narrow 2.39:1 or 2.40:1 widescreen aspect ratio. Open Matte watchmen 2009 directors cut open matte 1080 top
Crucially, Open Matte doesn’t crop the sides—it adds vertical information. You see more sky, more ceiling, more ground, and more character headroom. Yes, 4K exists
“Nothing ever ends.” — At least with Open Matte, you get to see a bit more of it ending. It exists only in 1080p