I'm Green-here-in envy. Beautiful shots. These should certainly change our views on the Tokina 80-400mm. There were 2 versions of this lens in Pentax mount the AT-X AF and the AT-X AFII. From the specs the only difference appears to be a tripod collar on the AFII. Which version do you have, and does anyone know if there are any other differences in the two - just in case I am lucky enough to find them?