Common Puffball (Lycoperdon perlatum)

This photo was taken at Heriot Watt University, Riccarton, Edinburgh during November 2013.
Camera - Canon EOS 5D Mk II
Shutter speed - 4s
Aperture - f16.0
Lens - Canon EF 100mm f2.8 L IS USM Macro
Focal Length - 100mm
ISO - 200
Filter - Hoya 67mm HD Circular Polariser
Lastolite 30cm Silver Reflector
Tripod