TK421138 said:

Another thing I think I noticed, in the scene where C-3PO and R2-D2 are in the death star hanger, across from the ship, I swear the image stretches up and widens ever so slightly. Check it out at 1:27:08 through 1:27:10. Again just something I hadn't caught before.

That's just what happens when you adjust the focus with an anamorphic lens. Watch: first the focus is on the stormtroopers in the background, then it switches to Threepio in the foreground.

You can see that sort of distortion in almost any movie, if you look for it.