Ive got an older polarized filter from my fathers manual 35mm gear, its in great condition, and i even wonder if he ever used it. It actually can be rotated around after its screwed on (maybe they all do that?). Its a 55mm size which doesnt quite fit my canon kit lens but it does sit pretty evenly over the lens if i hold it there. i dont know anything about the quality but it says "Tiffen Polarizer 55mm Japan" around the edge ive never used a polarized filter but is this as good as any? Have modern filters gotten any better since 30 years ago?