Puggo - Jar Jar's Yoda said:
You mention "flicker". Do you mean the type of flicker that happens when you videotape a screen and the frame rates don't match?
No, I mean variation in the brightness; e.g., more bright, less bright, more bright, less bright, and so on. It's inconsistent, but tends to happen more during bright scenes, such as when C-3PO is walking in the desert in the beginning.
I've seen plenty of what you're asking about and it doesn't look like that at all.