It was a very cold night, and I was constantly fighting condensation on the lens. My long suffering wife kindly aided me on several occasions clearing the lens for a few minutes. The fogging is slightly visible on the 3rd picture, before we realised it was happening.

All pictures were taken at ISO 100 using manual focus and exposure (see individual descriptions for details), with my D80 and Sigma 70-300mm.

slightly visible on the 3rd picture, before we realised it was happening.

All pictures were taken at ISO 100 using manual focus and exposure (see individual descriptions for details), with my D80 and Sigma 70-300mm.