I shot this earlier this month at the St Augustine Alligator Farm. I had the D3X with the 600 VR lens and I did not like what I was seeing. It was too close for a full body shot so I tried the tc20 III - I think in this bright light it came out quite well. As long as I have plenty of light and the subject is not moving the tc20 III works well with an f/4 lens.
1/1250 f/9 - iso 320 - ec+3