It is a question that many people have asked but it’s a VERY GOOD question. Personally I had a DP that messed up a few times and turned the switch on the Canon XL-2 to 4:3 instead of the 16:9. So I got pissed, I stressed out and I asked a lot of paniced questions.
But you my friend must do neither. It’s actually not a big deal, but DEFINATELY do NOT distort your footage 33%. That’s just a poor solution and I’m sorry someone on COW actually advised you to do so. You want distorted looking faces? Me either.
So..
What your going to do is blow it up, I think it’s around 120% or so, then your frame is going to be larger than the 16:9 frame and you’ll lose part of the top and bottom of your orginal image.
The down side is that you’ll have blown up the footage a bit, and you WILL lower the quality, that’s just life, but it’s nothing to be worry about, you probably won’t even notice it. I’ve taken samples of 4:3 footage, blow up to 120%, and have seen them on a large screen, didn’t notice a thing. I think it’s around 150% or something that you start seeing the quality loss, play around with it, use your eyes and don’t sweat it too much.
My 2 cents.
Will Keir