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Why you need polarised lenses for fishing
Polarised lenses are different to standard sunglass lenses; they have a special film either sandwiched between two other layers of the lens or applied to the front of a lens. What this special film does is eliminate glare that reflects off a surface like water. Light waves from the sun travel in all directions but when sunlight strikes a surface like water it becomes concentrated – this polarised light, as it is called, causes glare. Non-polarized sunglasses only reduce the amount of light entering the eye; they don’t block glare. Polarised lenses block glare and allow only useful vertical light to enter so you can see much more clearly.
Glare makes it difficult and uncomfortable to see and can cause eye strain. Glare also distorts the true colour of objects and makes them harder to distinguish. With polarised sunglasses you get glare-free vision, clear contrasts, more natural colours and reduced eye fatigue. Because prolonged exposure to glare on the water causes eye strain it can in turn lead to headaches – another reason why fishing enthusiasts should wear polarised lenses.
Glare causes the mirror-effect on water. As a polarised lens will eliminate this glare you can see what’s under the water. Especially helpful to judge the depth of a stream when fly fishing.
Are all polarised the same?
The short answer is no. Almost all polarised sunglasses under £50 use a lens material called TAC and the thin polarised film is usually on the front of the lens. This means over time it can scratch and eventually lose some of its polarising properties. On higher priced polarised sunglasses (typically above £50) the lens material is likely to be polycarbonate or Trivex. Here the polarised film is sandwiched between two layers of polycarbonate meaning the polarised film can never wear out. However if you’re unlikely to keep a pair for longer than 2 years then an inexpensive polarised sunglass with TAC lenses will do a perfectly adequate job.
The popular polarised lens colours for fishing are:
Grey – Good for bright / strong sun conditions.
Brown – Another good colour for bright sunny weather but adds contrast and helps sharpen the field of vision.
Amber & Copper – Also add contrast and ideal for overcast conditions.
Yellow & Yellow-Amber – Ideal for dull conditions and low or poor light.
Sunglasses For Sport feature a huge choice of polarized sunglasses with over 700 polarized models available, many specifically suited to fishing but hundreds of leisure styles too.