Just purchased the Canon EF 24-105 L lens and had the opportunity to test it out at the butterfly exhibit at the San Diego wild animal park. The exhibit is amazing and a perfect place to test a versatile lens. This little butterfly landed on my camera and literally stayed there the entire time. Made focusing manually quite tough. But was very enjoyable and people kept taking pictures of me. So I decided to whoop out my sidearm (iPhone 4) and snap a picture myself!