Years ago I bought a blue-yellow polarizing filter, after reading an article about it in Outdoor Photographer magazine.  I shot some interesting pictures with it, then set it aside, for, oh, a decade.  I had completely forgotten about it until a few months ago- after buying a new SLR, I rummaged through my old camera bag and found all kinds of cool things.  I decided to give it a try on a hike today to Lory State Park.  This was my favorite shot of the bunch.  The filter really gave the green lichens on the rock an unworldly shine.

WIRR 2008 Feb4