Beyond VR28 black, there actually are 2 black iridiums. Black iridium on oakley sunglasses uses a gray base lens and is a bit darker than on goggles.
Goggle black iridium has a rose/persimmon base for contrast and slightly lighter transmission.
Factory line is actually -3.5, confirmed with the guys at moment, but measure.. my topsheet was off by almost 1/2cm
I'm mounting +2, or -1.5cm from center.
Only for the outlet site, this is for backcountry.com, so this years gear.
There seem to still be a few restrictions, northface and burton gear arent working.