Just recently filmed an event with three cameras. The Panasonic HVX, Cannon A1, and T2i. All three were shooting in 29.97, but when syncing them in premiere, though the A1, and T2i sync perfectly, the HVX dirfts. Since the frame rate is the same, I'm kind of stumped. I tried rendering out a new movie of the HVX footage by itself, using all the same settings as the other two, but when I import that movie, it still drifts just the same.