Ronin was shot in Super 35 format and distributed in anamorphic prints designed to be projected at an aspect ratio of 2.35:1 (according to the Internet Movie Database). This results in widescreen images that look like this in theaters:
The DVD of Ronin contains both letterboxed and panned-and-scanned versions--on oppposite sides of the disc. Here's how the scene above looks when converted to TV's aspect ratio of 1.33:1.
Look closely at the edges of the frames in the following examples.