Lichen

This photo, of lichen growing on a Rowan tree, was taken at Hermand Birchwood, West Calder during October 2006.
Camera - Canon EOS 300D
Shutter speed - 1/125
Aperture - f3.2
Lens - Canon EF 100mm f2.8 Macro USM
Focal Length 100mm
ISO 100
Filter - UV
Tripod