Leonardo said:
I wonder why they zoomed in..?
Just been going through this thread (amazing!) and got to the bit about the zoomed in Falcon shots from ESB.
Anyway, I have a theory. In Rinzler's Making of ESB book, its mentioned that the Falcon cockpit was constructed to be slightly larger than the one in SW because of all the extra action that was to take place in it. Apparently when Lucas found out he was displeased - he thought that the cockpit should have remained small to emulate the cramped conditions that feature in real military aircraft cockpits.
I wouldn't be surprised if he zoomed in on these shots to compensate for the roomier design. As Harmy pointed out, it focuses more on the principals - and, I would say, provides an increased dramatic effect.