As described above, they have a filter which blocks out the light coming from reflections, reducing glare, thus making things easier to distinguish. Such shades are valuable to people who spend much of their lives outdoors, such as boaters and commercial and sports fishermen.
Polarized sunglasses differ from traditional ones in certain ways. The latter reduces the entire field of vision, thus making it difficult to distinguish subtle details; whereas polarized shades block out only selected rays. In other words, the benefit of these sunglasses is twofold: The cut down unnecessarily bright light while at the same time enabling the wearer to see subtle contrasts.
They are more expensive than traditional sunglasses- many of the pairs that you can get at Sunglass Hut, for instance, sell for $360- but this has not stopped them from becoming popular among the general public, as well as those whose lifestyle requires them.What makes polarized shades so useful for fishermen in particular is that, by absorbing reflections from the water, make it possible to see fish beneath the surface.
The reason it works this way is because light from a reflection is naturally polarized in the direction of that reflection; the optical grain is oriented perpendicular to that direction, thus cutting off the light coming from the reflection. Similarly, the filter can reduce the brightness of a sunny sky that is particularly noticeable on the horizon.
Lenses can be made from three materials- glass, polycarbonate, and acrylic. Of these, glass is the heaviest and most expensive, so it should not be worn for sports, while acrylic provides the least amount of distortion. The color of the lenses should also be taken into consideration when buying a pair for fishing: Gray is best for fishing on the open water, for example.
Polarized sunglasses differ from traditional ones in certain ways. The latter reduces the entire field of vision, thus making it difficult to distinguish subtle details; whereas polarized shades block out only selected rays. In other words, the benefit of these sunglasses is twofold: The cut down unnecessarily bright light while at the same time enabling the wearer to see subtle contrasts.
They are more expensive than traditional sunglasses- many of the pairs that you can get at Sunglass Hut, for instance, sell for $360- but this has not stopped them from becoming popular among the general public, as well as those whose lifestyle requires them.What makes polarized shades so useful for fishermen in particular is that, by absorbing reflections from the water, make it possible to see fish beneath the surface.
The reason it works this way is because light from a reflection is naturally polarized in the direction of that reflection; the optical grain is oriented perpendicular to that direction, thus cutting off the light coming from the reflection. Similarly, the filter can reduce the brightness of a sunny sky that is particularly noticeable on the horizon.
Lenses can be made from three materials- glass, polycarbonate, and acrylic. Of these, glass is the heaviest and most expensive, so it should not be worn for sports, while acrylic provides the least amount of distortion. The color of the lenses should also be taken into consideration when buying a pair for fishing: Gray is best for fishing on the open water, for example.