ireactions said:

If the shot of the speeder in Mos Eisley was a grainy, blurry mess in the original version because they didn't have enough time to do the composite as well as they could have and that's how it'd be no matter where the shot was taken (unless it's a new HD transfer) -- well, I just learned something I didn't know before! Thanks! :-D

According to George this shot was the reason why he decided to do "a few" changes to the 1997 re-release (this shot + he wanted to add the Jabba scene)