I am trying out a 400mm 5.6 lens that I rented. Today is the 1st day and so far I am liking it. This was handheld with a 1.4x extender mounted to the lens. I sure do need lots of practice catching moving targets with this combination. But when I got my act together the lens did its part.

I was pleased at how well it worked too. I used Al Servo and as long as I could hold it on the bird it tracked just fine. It was my tracking skills that need some work.

