Why is Michelle grinning? She's squinting into the late afternoon sun! But also it's the first session
with her Really Right Stuff BH-55 ballhead. Her previous small offset Gitzo ballhead would creep badly with a long or heavy lens.
Seen here using a Canon 300mm f/4L IS USM lens with 68mm Kenko extension tubes on a Canon XTi with cable release.
Typical long lens setup for photographing small insects.