I shot some bird pictures at Apache Del Apache in New Mexico last weekend. I used my D4, my Nikon 200-400 VR2 2.8 lens with a 1.7 Nikon Teleconverter. All mounted on a Gitzo tripod with a Wimberly sidekick.
I noticed some of my photos were very soft. Seemingly out of focus. I used a screenshot of the photo in ViewNX to show the focus point and show the metadata. You can also see the softness or actual poor focus in three of the four shots. I have attached the four examples.
My shutter speed seemed to be fast enough. Does anyone have any suggestions as to what I did wrong?