Thanks for the comments and suggestions. I am in the middle of an assignment, but I wanted to reply your comments

Artie, I will try saving the RED details. I have to learn a lot of PS for sure. I read the threads, but still not sure how to do it exactly. Is there a tutorial on the net on that?
Jeff, I always use the center sensor only and for birds in motion use All servo. It is a crop of course

Thanks again.