shandy706 said:

Looking at these four images I have to say that I think, even if it's the 2004 source, that they have definitely altered/tweaked/messed with the copy quite a bit for the blu-ray release.

Vader's lightsaber is MUCH different in the direct capture for the blu-ray than in either the 2004 or the Original Version.

The Original Version has a fat blade with a red/orange tint to it while the 2004 version is a fat PINK blade. The blu-ray versions is a MUCH thinner blade that has clearly been altered and appears to have a "redder" tint to it than the '04 version.

Welcome shandy706. The reason why the blade looks different on the Blu-Ray image is because it is in fact a different frame (plus the gamma change ). Look at all the other frames on vaders cloak and there is a small section that sticks out towards the bottom of the cloak. And because the blade pulsates, the thickness of the glow changes from frame to frame