All the Star Trek movie Blu-ray's are considerably
better than their DVD counterparts in terms of pure picture quality. They are not
standard definition upscales. TUC was released theatrically in an aspect ratio of 2.35:1. Nicholas Meyer elected to open the matte to appox. 2:1 for home video. YMMV, but the 2:1 ratio looked too "loose" to my eye - I was gratified the original was chosen for the BD.