Vince,
Thanks again for responding to my problem. No joy here, either — the tape was recorded on DSR 1800 decks, and comes in 4:3. Since it was shot for widescreen, I go to Interpret Footage on each clip and conform it to D1/DV NTSC Widescreen (1.2121).
Nine of the 11 batch-captured tapes came in at DV resolution, 720×480, and conformed to widescreen properly. Two of the clips were captured from the tape at 1280×480, and conformed in PP to 655×480.
This was clearly an error in the CS5 capture software. The solution was to re-capture the two clips, and re-capturing them corrected the error.
I will be reporting this problem to Adobe, and appreciate your attempts to help.
–Jim Sphar