how the heck are you guys scratching your lenses?
for sunny days: grey, which is 15%.
I see black iridium as good for sunny days with snow on the ground.
I had my glasses on my chest hanging from my zipper, in an elevator, holding my bike vertically.
Some guy pushed his way in, god knows why he was so pissy. I had to pull my bike suddenly to the side, and a rubber hood pushed on the lens. Nice square scratch, unusable.