He He LP - not cold here - I believe they describe my end of the country as mild :P Would be great if it was innovative filters which people found or made eg: dirty windows, or breathing on the lens etc. NB: Before anyone tries it the petroleum jelly is put on an old skylight filter or similar not directly on your lens.

And every one said, 'If we only live,
We too will go to sea in a Sieve,---
To the hills of the Chankly Bore!'
Far and few, far and few, Are the lands where the Jumblies live;
Their heads are green, and their hands are blue, And they went to sea in a Sieve.

Edward Lear
http://www.nonsenselit.org/Lear/ns/jumblies.html