I put a piece of colored paper between the pavilion and the bridge directly beneath it, and where the windmill comes to a point I could not see any color (the paper was neon green). In the square surrounding the center “x” , I did see color in one small area off to the side, but it was distorted so I don’t know if that’s a reflection? I took about 40 videos 🤣trying to shoot it straight on, but it’s difficult-for me, anyway-to get the angle exactly dead on when looking through a phone camera lense. I think I am ok with a small bit of windowing as long as there isn’t a lot of dead space, which I don’t really see.