I’ve wanted a circular polarizer for my Nikon DSLRs forever. I even wanted one for my Olympus E-10. But this post from Jeffrey Friedl’s blog pushed me over the edge. The first pic (the table, pizza, glass of water) is all it took. Within about a week, I bought a Hoya 77mm Super Multi Coated Thin (no front threads) Circular Polarizer Filter from Amazon.com, fulfilled by Adorama, for about $85. Its price goes up and down. Right now (less than 12 hours later) it’s $115.95 so I bought it at a good point.