|
Lens quality
The quality of opical polycarbonate and glass lenses for distortion free,
such as the waves and the blemishes,
to see evenly the distributed colour of each lense across.
You can tell when the lenses in a pair of sunglasses are a good quality, to
find out for yourself, you need
to find the on the surface of the lense an repeating lines.
With your glasses hold them a short disance away for your face and have one
eye closed, then look at the line!!
on the lense and move up and down, aswell left to right slowly, when you are
doing this they should stay straight
when your looking, if you do not see the line straight and it is a little
wave or even wiggle then the lenses are not
optical quality and this will distort your eye vision, with cheaper eyewear
glasses it is an commom thing to happen
for the distortion on the lenses.
|
