Up for grabs is a Hoya 82mm Circular Polarizing Pro 1 Digital Multi-Coated Glass Filter. Retail is $200+. Please note there is a faint scratch on the glass (kind of looks like a Nike swoosh) that's smooth to the touch and will not have any affect on anything, guaranteed (I'll even pay your return shipping). By the way, I tested this on a 16-35L II and it did not vignette any of my photos. Technically it's not a "slim" filter, but it is actually quite slim which is why it doesn't vignette. This is a very high quality filter, and I'll sell it for only $99.