HOYA 58POL 58mm Polarized Filter
Hoya produces this linear polarizer in their Philippines plant, just like many of their "professional" series filters. You are probably familiar with the Hoya brand as it's one of the most popular among professionals and enthusiasts alike. This filter uses the same glass as Hoya's upper-scale filters, so expect high image quality with this polarizer attached. The lowest priced entry in this list, the Hoya Linear Polarizer nonetheless has many of the hallmarks of Hoya's pricier filters, not just the glass.
Hoya began by using aluminum filter rings and not coating either side of the filter. Aluminum rings on a Hoya filter is nothing new since every one of their filters, even their priciest ones, use aluminum rings. That this filter is not coated might not be cause for alarm either, one simply needs to be careful when there is a bright light source in or near the frame of the image.
The lack of coatings, which can be designed to reduce flare, aid in cleaning, or hardening the glass surface against scratches, shouldn't affect your image in most situations with a little care. Be sure to use a lens hood whenever possible which is good advice whether your filters are coated or not. Lens hoods aren't just for reducing flare, they protect your valuable lenses from bumps and bruises as well. If you are looking for a low cost linear polarizer with high quality glass optics, look no further than the Hoya Linear Polarizer.