Is there any way to view ,for example, frame 1 on the left view, and frame 20 on the right view?
I tried "Locking" the view in COMP A and look at COMP B.
Although you CAN look at two different images (left & right views) you can ONLY view 2 different images of the same frame number.
I am looking to color grade frame 20 and match it to frame 1.
If there is a way, I forgot how to do it.
I assume you mean color correcting between the shots. Color correcting is getting the shot to look "right", color grading is getting the scene to look pretty.
One way is to duplicate your composition, put one at frame 1 and the other at frame 20 and have both comp windows open. This page [link] talks about that a bit.
Thanks! I have been away from AE for 2 years, so I forgot about Snapshot.
also, Color grading is the process of altering and enhancing the color of a motion picture or television image
Isn't that what I said?