RE: Sunglasses
BB I have to disagree with you about polarized light. I am also an avid photographer and have been published so I know a bit about lighting. When you look at the sky the light is hitting you direct and by using a polarizer you are deflecting that light, same as if you were in the snow or fishing. I used a polarizing filter a lot for a more dramatic effect with sky and clouds and a red filter if using B&W film. The other thing that you want is to have your glasses get rid of UVA and UVB as that's what will really damage your eyes. If you go to the zurich page he has a good explanation on how his works and why he developed them.