Kill Bill - Vol 1 -2003- Open Matte -1080p Web-...

In cinematography, "Open Matte" refers to a technique where a film is shot with a wider, often nearly square aspect ratio (like 1.37:1 or 16:9), but is intended for theatrical release in a narrower widescreen format (such as 2.39:1).

That depends on your philosophy.

However, filmmakers often "protect" the frame. They shoot the image on a negative or sensor that captures a taller image (usually 1.33:1 or 1.78:1). They then mask off the top and bottom to give you the 2.35:1 composition. Kill Bill - Vol 1 -2003- OPEN MATTE -1080p Web-...