What circular polarizer do you use with the 20-35 mm f 2.8 zoom? Thsi is a 77 mm filter, and vignetting is an issue. The Nikon 77 mm polarizer addresses this by having the step-up feature, but Nikon does not make a lens hood for the 20-35 mm. The HN-29 hood prescribed for this polarizer is for the 80-200 mm f 2.8 zoom, not the 20-35, and would probably cause vignetting if it were used with the 20-35 mm. Does anyone have any experience with circular polarizers by Tiffen or Hoya that address the vignetting problem by being super thin? They would fit inside the lens hood that Nikon makes for the 20-35. Which specific models of these filters work with this lens? Thanks for the info! -- John N. Wall email: [EMAIL PROTECTED] WWW: http://www4.ncsu.edu/unity/users/j/jnweg/html We are not revitalized or transformed as often by a change of circumstances as we are by a change of perspective.