kk650 said:

Well if you want to crop that changing left sidebar you definately need to crop the top and bottom... each shot will be getting stretched by a different amount

No, you could crop the black on the left but still maintain the ratio. Some shots would be "taller" than others is all.

But, the best way to maintain visual information would be to colour-grade/fix the 2D blu-Ray (If possible), and just add the iMAX shots in where needed. Then the maximum ammount of the film shot would be on the screen. Plus this would of course be a billion times easier (Again, if it's possible to get the grade right).

btw: Anybody know why the black bar is on the left?

p.s. Can we all perhaps not re-re-re-quote large image posts? I sense a certain building and bunny rabit making an appearance if it doesn't stop. Thanks.