Polarizing filter is the right way to make impressive outdoor photos in sunlight. The colours will be perfectly balanced throughout the slide including the beautifully blue sky.
A polarizing filter is an invaluable tool for outdoor photography under the shining sun. The filter removes glare and increases colour saturation and vividness, giving the sky the right shades of blue and surpressing haze. The HD filter has a 25% higher transmission than standard polarizing filters and aside from the polarizing effect, it doesn't affect colour balance, contrast, or clarity of the resulting image in the slightest.
The filter protects the lens from mechanical damage and repels water and grease. The coating takes the brunt of any potential damage, even during the cleaning process. That's why there's a special hard coating that lasts up to 200% longer than normal coatings. All this is in a very thin frame with a front thread for connecting additional filters or a lens cover.