TServo2049 said:

Star Trek VI was shot in Super-35. I'm not sure if it was 3-perf, or 4-perf (a la James Cameron). Does anybody have a 4:3 copy handy to check how much vertical space is added?

I know that prior to the Blu-ray transfer, there was a 2:1 theatrical cut transfer that ran on HDTV.

At least it was opened up, unlike Vittorio Storaro going senile and cropping his own 2.35:1 compositions to fit his later preferred Univisium ratio. Thank Heaven Apocalypse Now finally got a 2.35 release (though he still was able to force Criterion to use 1.9:1 for The Last Emperor).

I don't have a 4:3 copy but I do have ST VI on widescreen VHS and the aspect ratio on that is 2:1, the first DVD release had 2.35:1 and the SE DVD was altered by Meyer to 1.85:1.

Film4 have recently shown the theatrical cut in 2.35:1 IIRC. Next time they show it, I'll confirm for certain.