I fully expected that my EF 100-400mm f/4.5-5.6L IS II lens would be great for standard animal shots at either the zoo or the Safari Park and I was not disappointed...
The 400mm end let me get head shots even of tall guys like this giraffe...
I was also able to get some shots at 266mm from the tram out in the large enclosure...
However I was really happy to get some butterfly shots with my 100-400 Mk-ii, since my Tamron macro had given up the ghost...
1. 176mm 1/100 second f/5.6 ISO 1250
2. 220mm same exposure parameters
3. 400mm 1/200 second f/5.6 ISO 1250