For the film try Edmund Scientific at: http://scientificsonline.com/product.asp_Q_pn_E_3038396 Their 3037349 7" x 9" Gray Film Polarizer, Thickness 0.01" $6.95 looks like a good price. You need 2 sheets. Several years ago I bought plastic polarized sheets through a local photo shop and paid much more than this. Brian Gallagher -- Visit www.honeybeeworld.com/bee-l for rules, FAQ and other info ---