Via The Chutry Experiment, I found this side-by-side comparison, of panels from Frank Miller's comic book version of Sin City, to scenes from Robert Rodriguez's film. Check it out - it's pretty striking, in some cases, not just where the panels and the shots converge, but the small areas in which they diverge. Aesthetic decision making or technical limitations? You be the judge.
UPDATE: Film Rot crashed under the traffic these comparisons brought to their site! We're going to try to help them out. Meanwhile, check out Yahoo!'s slide show, excerpted after the jump, and keep coming back to Cinematical for more updates.