This is my first attempt at correcting aspect ratios. Does http://www.imcdb.org/vehicle_121601-Chevrolet-Bel-Air-1957.html look correct?

Are there any tricks to figuring out correct aspect ratio? IMDb only said 35mm http://us.imdb.com/title/tt0076820/technical , and wikipedia said 35mm is 1.85:1 http://en.wikipedia.org/wiki/Aspect_ratio_29 . I wanted to confirm I was doing this right before I went any further.