Deciding what to do when making a prop is hard. While I'd like to go for screen accuracy with my build, I'm not fond of those added screws.:unsure If only they had "HD" cameras back then!
Technically they did-- 35mm film is incredibly high resolution. 4K was the first time digital actually caught up to film. The problem more is that the lightsabers got very few close-ups for study, and pretty much every image we see has at least a few stages of reproduction involved. If we got a 4k scan of the Wampa cave shot, or the R2 bump directly from the original negative, we'd be able to see everything.
Most of the images we see are scans of printed stills of the final cut of the film. That's three levels of reproduction, each of which degrades. Even the current digital releases of the OT SE were captured and scanned (I believe) off of internegative work prints of the films, not the original shot film itself, as Lucas didn't want to subject them to any undo stress. Even that said, Adywan's revisited fan-edit was able to pull detail out of the latest digital release and give us enough detail to put the screws vs rivets debate to rest.
And could I bother you for a picture of how your saber looks now?
I haven't done it yet-- and there are FAR more skilled sabersmiths than me.