Oncidium Flowers

This photo was taken during July 2011.
The technical information is as follows.
Camera - Canon EOS 5D Mk II
Shutter speed - 1/20
Aperture - f18.0
Lens - Canon EF 100mm f2.8 Macro USM plus Kenko 12mm Extension Tube
Focal Length 100mm
ISO 100
Interfit Cool Fluorescent Lights x 2
Tripod