In the first test, the darkening has worked very well and again the lightening in the forest works just fine. Is responsible for darkening the UV irradiation.
The glasses do not fog up. The only problem (which also causes no penalty) is that the dripping sweat from his brow in extreme heat / effort runs on the glasses and there leaves little point. This field of view is somewhat limited and you're good at brushing if you again want to see something. The supplied lens cleaning cloth (= storage bag) does not thereby necessarily the best service.
Since I have sensitive eyes and always had to fight for runs with tears in his eyes, I was thoroughly impressed by the design, of any draft is wodurc shot past the eye and cause no recirculation to tears.
A great spectacle, you unparalleled for the price searches!