[Adam Mokrzecki]

I used this Tutorial, it did the trick for me.

https://monstersareart.blogspot.com/2009/06/overexposure-correction-in-final-cut.html

(3 years to get you an answer, but I just found this thread looking for a solution for the same problem, maybe it’ll help those looking for answer who find this thread the same way I did.)

[Adam Mokrzecki]

I set it to square pixel aspect ratio and it looks like it worked. Thanks!

I’m still learning a lot about AE, How do I know which pixel aspect ratio to use, especially since most of my projects use a variety of custom sized compositions?